Here's more information if that helps.
number on the front M15-2GB-0307
I downloaded the oldest version of mp3 update tool I could find, version 1.0
That one helps the most, and it seems to know which firmware I need to fix my MP3.
Version 3.0.25. So, it tries to upload it again, but it says "Flash is no responding."
I've tried applying pressure to the chip, but still the same message. I've also tried uploading with 4.10 and 3.68.
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