Follow these steps in order to isolate the issue, starting with the most common culprit: the physical connection. 1. Inspect and Stabilize the Hardware Connection
Rarely, the flash chip itself is degrading. NOR flash has a limited number of read cycles? No—reads are passive. But is real: repeatedly reading the same row can flip bits in adjacent rows on very old or worn-out chips (SST39SF series after 10k+ cycles). Follow these steps in order to isolate the
Thus, the CH341A’s "disagreement" warning is not a nuisance—it is a critical diagnostic signal. It forces the technician to confront the physical realities of flash memory: that storage is never perfect, that programmers are not transparent windows, and that verification is the only shield against silent data corruption. NOR flash has a limited number of read cycles
This error means the data currently written to the physical chip does not match the file loaded in your programming software. It typically occurs during the verification phase after an attempted write or erase operation. Why the Disagreement Error Happens Thus, the CH341A’s "disagreement" warning is not a