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Hi, I very stupidly erased the program on my fruit machine when trying to replace the battery and solve a call manager issue. So I've found the MPU6 BIN files elsewhere on this forum and I'm trying to reprogram it, but every time I select 'BOOTSTRAP', it goes to 'READING USB STCK', then 'NO FILESYSTEM'.
I've tried several USB sticks now, formatted as NTFS and eventually FAT32 (just to try), but always the same result.
Does anyone have any ideas please, or shall I take the sledge hammer approach?
Thanks in advance for any help.
