This confirms the chip is actually empty (all FF). If the blank check fails, your programmer cannot talk to the chip properly. Write the new firmware.
Ensure the red wire on the ribbon cable aligns with Pin 1 (the dot) on the chip. This confirms the chip is actually empty (all FF)
The error message "Chip main memory with the contents are in disagreement" is a common headache for anyone using the CH341A USB programmer. It typically means the data written to the BIOS or EEPROM chip doesn't match the source file during the verification stage. 🛠️ Root Causes of the "Disagreement" Error Ensure the red wire on the ribbon cable
If programming "in-circuit," try plugging the motherboard into its power supply (but do not turn the PC on) to stabilize the ground. To help you get this sorted, could you tell me: What is the exact model number printed on your chip? Are you using a SOIC8 clip or did you desolder the chip? What software version are you currently running? 🛠️ Root Causes of the "Disagreement" Error If
If you are working with a 1.8V chip (common in newer laptops), you use a 1.8V adapter. Forcing 3.3V or 5V will result in a verification error or a fried chip. 3. Software Alternatives
If you are programming a chip while it is still on the motherboard, other components may be drawing power away from the programmer.