If Windows fails, boot a Linux live USB. The modem usually appears as /dev/ttyUSB2. Then:
sudo modprobe option
sudo sh -c 'echo "1199 9079" > /sys/bus/usb-serial/drivers/option1/new_id'
sudo screen /dev/ttyUSB2 115200
Then run the same AT+EGMR commands.
Final warning: Before proceeding, ensure you are legally permitted to change the IMEI in your country and for your specific use case. In most places, doing this without explicit authorization from the network operator or device manufacturer is a felony.
Need help? Leave a comment below with your exact laptop model and modem firmware version (get with ATI).
Changing or "repairing" the IMEI on a Fibocom L850-GL (based on the Intel XMM 7360 platform) is a highly technical process with significant risks
. While common for Mediatek-based modems, the Intel-based L850-GL does not natively support standard IMEI change commands like Key Technical Considerations Command Compatibility : Standard commands like AT+EGMR=1,7,"[IMEI]"
often return errors on the L850-GL. Some users suggest these commands only work for restoring a factory IMEI, not for spoofing a new one. Firmware Risk
: Attempting to flash firmware to change the IMEI carries a high risk of bricking the modem. Reports on technical forums like
indicate that some firmware updates can cause the modem to lose its IMEI entirely, with no known way to recover it. Operating Modes
: The modem can operate in different modes, such as MBIM (common for Windows) and NCM (common for routers). Technical scripts for IMEI modification often require the modem to be in a specific diagnostic or NCM mode to communicate properly. Methods and Tools
Generic Repair IMEI (patch) on MediaTek devices with ChimeraTool
Changing IMEI on Fibocom L850-GL: A Step-by-Step Guide
The Fibocom L850-GL is a popular cellular module used in various IoT devices, providing wireless connectivity and communication capabilities. However, there may be situations where you need to change the IMEI (International Mobile Equipment Identity) of your Fibocom L850-GL module. This article will guide you through the process of changing the IMEI on your Fibocom L850-GL module.
Why Change IMEI?
There are several reasons why you might want to change the IMEI of your Fibocom L850-GL module:
Precautions
Before attempting to change the IMEI on your Fibocom L850-GL module, please note:
Tools and Requirements
To change the IMEI on your Fibocom L850-GL module, you will need:
Step-by-Step Instructions
To change the IMEI on your Fibocom L850-GL module:
Conclusion
Changing the IMEI on your Fibocom L850-GL module requires careful attention to detail and adherence to proper procedures. Ensure you have a valid, unique IMEI number and follow the step-by-step instructions outlined in this article. If you are unsure or uncomfortable with the process, consult with a qualified technician or contact Fibocom support for assistance.
Technical Deep Dive: Modifying the IMEI on Fibocom L850-GL Fibocom L850-GL is a high-performance LTE Cat9 module based on the Intel XMM7360
chipset, commonly found in Lenovo ThinkPads and HP laptops. While users often seek to change the International Mobile Equipment Identity (IMEI) to bypass carrier restrictions or "repair" a lost identifier after a firmware update, doing so on this specific hardware is exceptionally difficult and carries significant risks. Manjaro Linux Forum The Core Challenge: SecureLevel and OTP Memory
Unlike older modems (like Huawei or Quectel) that often accept simple AT commands for IMEI modification, the Fibocom L850-GL was designed with higher security standards. One-Time Programmable (OTP) Memory:
Many technical documents indicate that for modern Fibocom modules, the IMEI is written to OTP memory
. Once set at the factory, this hardware-level storage cannot be overwritten through standard software methods. SecureLevel 0 Requirement: Modification is generally only possible on modules with SecureLevel: 0
. Most retail L850-GL units ship with a higher security level, effectively locking the IMEI from further changes. Intel XMM Architecture:
Because it uses an Intel chipset rather than the more common Qualcomm Snapdragon, standard tools like
(which use QCN files to store IMEI) are not compatible with the L850-GL. Known Approaches and Limitations 1. The AT Command Method (Rarely Successful)
Some users attempt to use the standard "IMEI Write" AT command, though it is frequently disabled or returns an error on retail L850-GL units: AT+EGMR=1,7,"YOUR_NEW_IMEI" xmm7360/xmm7360-usb-modeswitch: Tools for the ... - GitHub
How to Change the IMEI on a Fibocom L850-GL: A Comprehensive Guide
The Fibocom L850-GL is a popular M.2 LTE Cat9 module widely used in laptops like the Lenovo ThinkPad and HP EliteBook. While it offers excellent connectivity, enthusiasts and power users often seek to modify its settings—including the International Mobile Equipment Identity (IMEI)—to bypass carrier restrictions, fix compatibility issues, or for research purposes.
In this article, we will explore the technical steps, necessary tools, and critical risks involved in changing the IMEI of a Fibocom L850-GL. ⚠️ Important Disclaimer fibocom l850gl change imei
Changing a device's IMEI is illegal in many jurisdictions (such as the UK, India, and parts of the EU) and may violate your carrier's Terms of Service. This guide is for educational and diagnostic purposes only. Proceeding may void your warranty or permanently "brick" your hardware. Understanding the Fibocom L850-GL
The L850-GL is built on the Intel XMM 7360 chipset. Unlike older Qualcomm-based modules that use standard AT commands for IMEI modification, Intel-based modems are significantly more locked down. Modification usually requires interacting with the modem's firmware or using specialized engineering tools. Prerequisites
Before attempting any modification, ensure you have the following:
Drivers: Correct Fibocom/Intel XMM 7360 drivers installed on a Windows PC.
Port Access: The ability to see the modem under "Ports (COM & LPT)" in Device Manager.
Terminal Software: Tools like PuTTY, Tera Term, or NB-IoT/LTE Engineering tools.
Firmware Version: Ensure you know your current firmware version, as some methods are patched in newer releases. Step-by-Step Method (Overview) 1. Enabling Engineering/Diagnostic Mode
By default, the L850-GL hides its diagnostic ports. You must send a specific AT command to reveal them.
Open your terminal software and connect to the modem's AT command port.
Type AT+GTUSBMODE=7 (or the specific mode code for your firmware version).
The modem will restart, and new ports should appear in the Windows Device Manager. 2. Finding the Right AT Command
For many Intel modems, the standard AT+EGMR command used for Qualcomm chips will not work. Instead, engineering commands like AT+XCPERM or specific manufacturer-locked commands are often required.
Command Structure: Often looks like AT+XIMEI="your_new_imei".
Verification: After sending, use AT+CGSN to check if the modem reports the new identity. 3. Using Specialized Software
Because the L850-GL is an Intel-based card, many users find success using Intel's Flash Tool or Phone Tool (often used by OEMs for factory calibration). These tools allow you to read and write the NV (Non-Volatile) items where the IMEI is stored. Common Challenges and Troubleshooting The "Read Only" Error
Most modern L850-GL modules have write-protection on the IMEI sector. If you receive an "ERROR" response to AT commands, your firmware may be locked. You might need to downgrade to an earlier, "unlocked" engineering firmware before the changes will take effect. Driver Disappearance
Switching USB modes can sometimes cause the device to vanish from the OS. Always keep your original AT+GTUSBMODE value handy to revert the modem to its standard laptop-integrated state. The Role of the Firmware If Windows fails, boot a Linux live USB
If the IMEI change doesn't "stick" after a reboot, the modem is likely pulling the original ID from a protected bootloader partition. In this case, a deep firmware flash is the only solution. Is it Worth It?
For most users, the Fibocom L850-GL is best used with its default settings. However, if you are a developer working in a lab environment or a hobbyist trying to get a ThinkPad module working on a specific IoT network, the steps above provide the framework for modification.
Final Tip: Always backup your original NV RAM and IMEI before making any changes. If the process fails, you will need those backups to restore cellular functionality to your laptop.
Changing the IMEI (International Mobile Equipment Identity) of a Fibocom L850-GL module is a complex and often restricted process. While similar modules like the L860-GL have documented methods for IMEI repair using specific tools, users and developers often report that the L850-GL lacks a standard method for IMEI restoration once it is lost during firmware flashing. Key Technical Considerations
Permanent ID: The IMEI is typically hardcoded into the modem's hardware at the factory and is designed to be permanent.
Firmware Risks: Flashing custom or incorrect firmware on the L850-GL can sometimes "wipe" or reset the IMEI. Many community forums report that there is currently no known reliable way to restore or change the IMEI on this specific model if it becomes invalid after such a flash.
AT Command Limits: While some cellular modules support the AT+EGMR command for IMEI repair (e.g., AT+EGMR=1,7,"[NEW_IMEI]"), this is frequently blocked or ineffective on the L850-GL series without specific engineering-level access. Potential Recovery & Diagnostic Steps
If you are attempting to repair an invalid IMEI after a firmware update, you can try these diagnostic steps:
Check Hardware ID: Use a terminal to identify your module version with:at@hwid:ver_hwid_get_id(6).
Verify Version: Check current firmware version using ATI8 or AT+GTMCFWVER? to ensure compatibility.
External Tools: Specialized software like ChimeraTool or IMEIChanger is sometimes used for repairing identifiers on MediaTek or Intel-based modules, though success with the L850-GL is not guaranteed. Legal and Practical Warning
Legality: Changing or tampering with an IMEI is illegal in many countries (including the U.S., UK, and Canada) as it can be used to bypass blacklists or facilitate fraud.
Network Access: Carriers use the IMEI to identify device types. Changing it to a different device's ID (like a phone's IMEI for a tablet plan) may violate your service provider's terms of service.
What Is an IMEI Lock and How Does It Work? A Complete Guide - floLIVE
Alternative: Use ATI command after connecting to confirm you’re talking to the right device.
Before attempting an IMEI change, you must understand what the L850-GL actually is. It is not just a simple radio; it is a miniature computer running its own firmware.
This last point is crucial: The IMEI is cryptographically protected. Unlike cheap Chinese USB dongles from 2010, the L850-GL uses signed firmware and secure storage. Then run the same AT+EGMR commands
Let’s assume you ignore all warnings and somehow succeed in changing the IMEI via hardware hacking.
If Windows fails, boot a Linux live USB. The modem usually appears as /dev/ttyUSB2. Then:
sudo modprobe option
sudo sh -c 'echo "1199 9079" > /sys/bus/usb-serial/drivers/option1/new_id'
sudo screen /dev/ttyUSB2 115200
Then run the same AT+EGMR commands.
Final warning: Before proceeding, ensure you are legally permitted to change the IMEI in your country and for your specific use case. In most places, doing this without explicit authorization from the network operator or device manufacturer is a felony.
Need help? Leave a comment below with your exact laptop model and modem firmware version (get with ATI).
Changing or "repairing" the IMEI on a Fibocom L850-GL (based on the Intel XMM 7360 platform) is a highly technical process with significant risks
. While common for Mediatek-based modems, the Intel-based L850-GL does not natively support standard IMEI change commands like Key Technical Considerations Command Compatibility : Standard commands like AT+EGMR=1,7,"[IMEI]"
often return errors on the L850-GL. Some users suggest these commands only work for restoring a factory IMEI, not for spoofing a new one. Firmware Risk
: Attempting to flash firmware to change the IMEI carries a high risk of bricking the modem. Reports on technical forums like
indicate that some firmware updates can cause the modem to lose its IMEI entirely, with no known way to recover it. Operating Modes
: The modem can operate in different modes, such as MBIM (common for Windows) and NCM (common for routers). Technical scripts for IMEI modification often require the modem to be in a specific diagnostic or NCM mode to communicate properly. Methods and Tools
Generic Repair IMEI (patch) on MediaTek devices with ChimeraTool
Changing IMEI on Fibocom L850-GL: A Step-by-Step Guide
The Fibocom L850-GL is a popular cellular module used in various IoT devices, providing wireless connectivity and communication capabilities. However, there may be situations where you need to change the IMEI (International Mobile Equipment Identity) of your Fibocom L850-GL module. This article will guide you through the process of changing the IMEI on your Fibocom L850-GL module.
Why Change IMEI?
There are several reasons why you might want to change the IMEI of your Fibocom L850-GL module:
Precautions
Before attempting to change the IMEI on your Fibocom L850-GL module, please note:
Tools and Requirements
To change the IMEI on your Fibocom L850-GL module, you will need:
Step-by-Step Instructions
To change the IMEI on your Fibocom L850-GL module:
Conclusion
Changing the IMEI on your Fibocom L850-GL module requires careful attention to detail and adherence to proper procedures. Ensure you have a valid, unique IMEI number and follow the step-by-step instructions outlined in this article. If you are unsure or uncomfortable with the process, consult with a qualified technician or contact Fibocom support for assistance.
Technical Deep Dive: Modifying the IMEI on Fibocom L850-GL Fibocom L850-GL is a high-performance LTE Cat9 module based on the Intel XMM7360
chipset, commonly found in Lenovo ThinkPads and HP laptops. While users often seek to change the International Mobile Equipment Identity (IMEI) to bypass carrier restrictions or "repair" a lost identifier after a firmware update, doing so on this specific hardware is exceptionally difficult and carries significant risks. Manjaro Linux Forum The Core Challenge: SecureLevel and OTP Memory
Unlike older modems (like Huawei or Quectel) that often accept simple AT commands for IMEI modification, the Fibocom L850-GL was designed with higher security standards. One-Time Programmable (OTP) Memory:
Many technical documents indicate that for modern Fibocom modules, the IMEI is written to OTP memory
. Once set at the factory, this hardware-level storage cannot be overwritten through standard software methods. SecureLevel 0 Requirement: Modification is generally only possible on modules with SecureLevel: 0
. Most retail L850-GL units ship with a higher security level, effectively locking the IMEI from further changes. Intel XMM Architecture:
Because it uses an Intel chipset rather than the more common Qualcomm Snapdragon, standard tools like
(which use QCN files to store IMEI) are not compatible with the L850-GL. Known Approaches and Limitations 1. The AT Command Method (Rarely Successful)
Some users attempt to use the standard "IMEI Write" AT command, though it is frequently disabled or returns an error on retail L850-GL units: AT+EGMR=1,7,"YOUR_NEW_IMEI" xmm7360/xmm7360-usb-modeswitch: Tools for the ... - GitHub
How to Change the IMEI on a Fibocom L850-GL: A Comprehensive Guide
The Fibocom L850-GL is a popular M.2 LTE Cat9 module widely used in laptops like the Lenovo ThinkPad and HP EliteBook. While it offers excellent connectivity, enthusiasts and power users often seek to modify its settings—including the International Mobile Equipment Identity (IMEI)—to bypass carrier restrictions, fix compatibility issues, or for research purposes.
In this article, we will explore the technical steps, necessary tools, and critical risks involved in changing the IMEI of a Fibocom L850-GL. ⚠️ Important Disclaimer
Changing a device's IMEI is illegal in many jurisdictions (such as the UK, India, and parts of the EU) and may violate your carrier's Terms of Service. This guide is for educational and diagnostic purposes only. Proceeding may void your warranty or permanently "brick" your hardware. Understanding the Fibocom L850-GL
The L850-GL is built on the Intel XMM 7360 chipset. Unlike older Qualcomm-based modules that use standard AT commands for IMEI modification, Intel-based modems are significantly more locked down. Modification usually requires interacting with the modem's firmware or using specialized engineering tools. Prerequisites
Before attempting any modification, ensure you have the following:
Drivers: Correct Fibocom/Intel XMM 7360 drivers installed on a Windows PC.
Port Access: The ability to see the modem under "Ports (COM & LPT)" in Device Manager.
Terminal Software: Tools like PuTTY, Tera Term, or NB-IoT/LTE Engineering tools.
Firmware Version: Ensure you know your current firmware version, as some methods are patched in newer releases. Step-by-Step Method (Overview) 1. Enabling Engineering/Diagnostic Mode
By default, the L850-GL hides its diagnostic ports. You must send a specific AT command to reveal them.
Open your terminal software and connect to the modem's AT command port.
Type AT+GTUSBMODE=7 (or the specific mode code for your firmware version).
The modem will restart, and new ports should appear in the Windows Device Manager. 2. Finding the Right AT Command
For many Intel modems, the standard AT+EGMR command used for Qualcomm chips will not work. Instead, engineering commands like AT+XCPERM or specific manufacturer-locked commands are often required.
Command Structure: Often looks like AT+XIMEI="your_new_imei".
Verification: After sending, use AT+CGSN to check if the modem reports the new identity. 3. Using Specialized Software
Because the L850-GL is an Intel-based card, many users find success using Intel's Flash Tool or Phone Tool (often used by OEMs for factory calibration). These tools allow you to read and write the NV (Non-Volatile) items where the IMEI is stored. Common Challenges and Troubleshooting The "Read Only" Error
Most modern L850-GL modules have write-protection on the IMEI sector. If you receive an "ERROR" response to AT commands, your firmware may be locked. You might need to downgrade to an earlier, "unlocked" engineering firmware before the changes will take effect. Driver Disappearance
Switching USB modes can sometimes cause the device to vanish from the OS. Always keep your original AT+GTUSBMODE value handy to revert the modem to its standard laptop-integrated state. The Role of the Firmware
If the IMEI change doesn't "stick" after a reboot, the modem is likely pulling the original ID from a protected bootloader partition. In this case, a deep firmware flash is the only solution. Is it Worth It?
For most users, the Fibocom L850-GL is best used with its default settings. However, if you are a developer working in a lab environment or a hobbyist trying to get a ThinkPad module working on a specific IoT network, the steps above provide the framework for modification.
Final Tip: Always backup your original NV RAM and IMEI before making any changes. If the process fails, you will need those backups to restore cellular functionality to your laptop.
Changing the IMEI (International Mobile Equipment Identity) of a Fibocom L850-GL module is a complex and often restricted process. While similar modules like the L860-GL have documented methods for IMEI repair using specific tools, users and developers often report that the L850-GL lacks a standard method for IMEI restoration once it is lost during firmware flashing. Key Technical Considerations
Permanent ID: The IMEI is typically hardcoded into the modem's hardware at the factory and is designed to be permanent.
Firmware Risks: Flashing custom or incorrect firmware on the L850-GL can sometimes "wipe" or reset the IMEI. Many community forums report that there is currently no known reliable way to restore or change the IMEI on this specific model if it becomes invalid after such a flash.
AT Command Limits: While some cellular modules support the AT+EGMR command for IMEI repair (e.g., AT+EGMR=1,7,"[NEW_IMEI]"), this is frequently blocked or ineffective on the L850-GL series without specific engineering-level access. Potential Recovery & Diagnostic Steps
If you are attempting to repair an invalid IMEI after a firmware update, you can try these diagnostic steps:
Check Hardware ID: Use a terminal to identify your module version with:at@hwid:ver_hwid_get_id(6).
Verify Version: Check current firmware version using ATI8 or AT+GTMCFWVER? to ensure compatibility.
External Tools: Specialized software like ChimeraTool or IMEIChanger is sometimes used for repairing identifiers on MediaTek or Intel-based modules, though success with the L850-GL is not guaranteed. Legal and Practical Warning
Legality: Changing or tampering with an IMEI is illegal in many countries (including the U.S., UK, and Canada) as it can be used to bypass blacklists or facilitate fraud.
Network Access: Carriers use the IMEI to identify device types. Changing it to a different device's ID (like a phone's IMEI for a tablet plan) may violate your service provider's terms of service.
What Is an IMEI Lock and How Does It Work? A Complete Guide - floLIVE
Alternative: Use ATI command after connecting to confirm you’re talking to the right device.
Before attempting an IMEI change, you must understand what the L850-GL actually is. It is not just a simple radio; it is a miniature computer running its own firmware.
This last point is crucial: The IMEI is cryptographically protected. Unlike cheap Chinese USB dongles from 2010, the L850-GL uses signed firmware and secure storage.
Let’s assume you ignore all warnings and somehow succeed in changing the IMEI via hardware hacking.