Black Lives Matter - Action and Equality.
0

SAMD51 (M4) board users: update your bootloaders to >=v3.9.0
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

SAMD51 (M4) board users: update your bootloaders to >=v3.9.0

by danhalbert on Fri May 08, 2020 12:55 pm

If you have a SAMD51 board, including Metro M4, Feather M4, ItsyBitsy M4, Grand Central M4, Hallowing M4, PyBadge, PyGamer, PyPortal, or MONSTER M4SK, we highly recommend that you update the bootloader on your board to prevent internal flash occasionally being overwritten on power up.

For most boards this may just overwrite the loaded user program, but for a small number of boards that were shipped early in the product cycle, their bootloaders are not protected from overwriting, so this bug may brick the board, and require rewriting the bootloader manually, which can be difficult without external equipment or software.

There are directions for updating the bootloader in the primary product Learn Guide for each board, such as:
https://learn.adafruit.com/adafruit-fea ... bootloader
https://learn.adafruit.com/adafruit-pyg ... bootloader
https://learn.adafruit.com/adafruit-pyp ... bootloader
https://learn.adafruit.com/adafruit-pyb ... bootloader
etc.

danhalbert
 
Posts: 2024
Joined: Tue Aug 08, 2017 12:37 pm

Please be positive and constructive with your questions and comments.