If you have no PC and the OTA is broken, use an SD card.
Sometimes a new update introduces bugs. ZTE rarely allows downgrades via the standard menu. To downgrade: Zte Mu5001 Firmware Update
Unzip the downloaded package. You should see: If you have no PC and the OTA is broken, use an SD card
This method involves downloading the firmware binary locally and uploading it via the device's administrative web panel (typically accessed at 192.168.0.1). Sometimes a new update introduces bugs
If you have no PC and the OTA is broken, use an SD card.
Sometimes a new update introduces bugs. ZTE rarely allows downgrades via the standard menu. To downgrade:
Unzip the downloaded package. You should see:
This method involves downloading the firmware binary locally and uploading it via the device's administrative web panel (typically accessed at 192.168.0.1).