Thread: Trying to unbrick a zumo 220

Have you just used a patched boot.bin for update.txt execution?
Use the original one.

The whole idea behind 0x3E is to locate the broken flash block. If you just change two bytes, you will only test 1 or 2 blocks, depending on the location of bytes.

Originally Posted by kunix

Have you just used a patched boot.bin for update.txt execution?
Use the original one.

The way I tried to flash the 0x3E version of fw_all.bin is by dragging and dropping it on Updater.exe and bringing the zumo into pre-boot mode. From post #8 I understood that is the way to do it. There was no boot.bin involved in my method. Do I understand correctly from your reply I should use the microSD method?