Most tools lack TC58NC6623’s NAND ID.
Add to FlashList.dat:
Example entry (Toshiba 15nm MLC 64Gb):
@ 0x98,0xDE,0x94,0x93,0x76,0x57, 0x11, 0x02, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, Toshiba TC58NC6623 15nm MLC
If the GUI settings fail, directly edit the UFD_SSD.INI file (located in the ini folder). Add or modify these lines under [FUNCTION]: tc58nc6623 sss6698ba mptool work
ENABLE = 1
FORCEDLOWLEVELFORMAT = 1
ERASEALLBADBLOCK = 1
IDBLOCKVERSION = 2
TESTCAPACITY = 0 ; Set to 1 to force a safe lower capacity
Then, under [OPTION], add:
SETAP = 1 (This forces Auto Production mode, bypassing many initial checks). Most tools lack TC58NC6623’s NAND ID
First, a critical revelation: The TC58NC6623 is not a standalone controller. In 99% of cases, this string appears in tools like ChipGenius or USBDeview when the USB drive uses a Silicon Motion (SMI) controller, specifically the SSS6698-BA. If the GUI settings fail, directly edit the UFD_SSD
Why the confusion? TC58NC6623 was originally a Toshiba (now Kioxia) part number for an early USB 3.0 controller. However, SMI licensed, cloned, or rebranded this design. When you see "TC58NC6623" in Windows, the actual silicon underneath is almost always an SMI SSS6698-BA.
To perform successful "MPTOOL work," you must target the SSS6698-BA using SMI’s toolset. Using generic USB tools will fail.