FRM3 converter D-Flash to EEPROM
The "FRM3" and other Electronic Control Units contain the MC9S12XEQ384 microprocessor with integrated Flash. When the integrated Flash is used in eeprom emulation mode, like in the case of the FRM3, the settings can get corrupted making the ECU unable to access the eeprom again. The ECU can be repaired by programming the correct data in the (simulated) eeprom.