Fix For WIo Terminal Bootloader Issue

It appears that SeeeStudio has finally acknowledged and created a fix for the bootloader issue on the Wio Terminal device. As of yesterday, you can download an update for the Wio bootloader. Note that it is the same procedure as updating the Wio terminal application firmware, but with the updated bootloader UF2 file. This update is version UF2 Bootloader v3.15.0-4-gaa4429b SFHWRO  You can view the current bootloader version when the device is in bootloader mode by looking at the text file INFO_UF2.TXT  (same folder that you copy the FW update to).  After the update, you should see:

UF2 Bootloader v3.15.0-4-gaa4429b SFHWRO
Model: Wio Terminal
Board-ID: SAMD51P19A-WioTerminal-v0

You can either download this version from BTT website here:  update-bootloader-wio_terminal-v3.15.0-4-gaa4429b.uf2

Or you can download from the SeeedStudio link on their page describing the update here:
https://wiki.seeedstudio.com/Program_loss_by_repeated_power/

Note: After updating the bootloader and verifying that the version is correct, you will need to re-load the Wio Firmware for the Nano.

Hopefully, this will prevent the issue where the Wio Terminal ocassionally loses the application firmware and forces you to re-load the firmware.

That's great to hear. I will give that a try.

So far the update seems to be working well.

Working great for me also