The "disagreement" often happens because one pin loses contact halfway through the process.
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? The "disagreement" often happens because one pin loses
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 Are you using a SOIC8 clip or did you desolder the chip
The gold standard for command-line stability. 4. The "Blank Check" Workflow Forcing 3
The SOIC8 clip is notorious for slipping. Even a microscopic shift in the pins will cause data corruption.
If the clip fails, desoldering the chip and using the header adapter is the most reliable method. 2. Solve the Voltage Issue
If you are programming a chip while it is still on the motherboard, other components may be drawing power away from the programmer.