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Questions tagged “write-protect”

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Programmer returns WRITE FAIL on an SFP+ that dumps cleanly: dead EEPROM or something blocking writes?

We recode a small batch of modules for customer hosts most months, nothing exotic: read the original page, write the vendor string the host wants, put the module in the switch and move on. One module out of the current batch refuses every write while reading back perfectly, and before I bin it I…