
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 SOIC8 clip is notorious for slipping. Even a microscopic shift in the pins will cause data corruption. What software version are you currently running
If you extended the ribbon cable, the signal might be degrading. Keep cables under 10cm. If you extended the ribbon cable, the signal
This is where the "disagreement" usually pops up. If it fails here after a successful erase, the issue is likely electrical noise or a weak USB port. 💡 Quick Pro-Tips If you extended the ribbon cable
The gold standard for command-line stability. 4. The "Blank Check" Workflow
Selecting a similar but incorrect chip model in the software can cause addressing errors. 🚀 Step-by-Step Fixes 1. Check the Physical Connection
Never click "Write" immediately. Follow this sequence to isolate the error: the chip and save the backup. Erase the chip completely.
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