If you still see the error after all six steps, the chip itself is physically failing. Replace it. But nine times out of ten, one of these steps will bring your Top chip back to life.
Concise troubleshooting matrix (symptom → likely cause → first fix) Decoding the "Memory Disagreement" Error: A Complete Guide
The chip now stays deselected correctly, eliminating stray bits that cause disagreement. The Fix Concise troubleshooting matrix (symptom → likely