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Open the case and locate the main MCU:
: Some reworks may require reflashing the MCU, similar to how CarProg MCUs are reflashed via JTAG to reset counters or fix firmware corruption. 4. Verification
new firmware ( .bin or .hex ).
Use the iProg software to "Read" the chip. Always save the original dump before making any modifications.
This smooths out voltage ripples that cause data corruption. Step 5: Fixing the 74HC125 Logic Gates
Clone versions frequently use sub-optimal components that cause communication failures with vehicle ECUs. A successful rework addresses:
Modifying the board so it passes the internal "Full Test" script required for many advanced functions. Key Hardware Modifications