Thingy91 - can't program, won't go into serial recovery mode, no lights

RE: Thingy91 - can't program, won't go into serial recovery mode, no lights

Akeem — Sat, 21 Aug 2021 21:15:37 GMT

I follow this link and i was able to restore the default code

devzone.nordicsemi.com/.../thingy91_2d00_fw_2d00_update_2d00_mcuboot

RE: Thingy91 - can't program, won't go into serial recovery mode, no lights

Akeem — Sat, 21 Aug 2021 15:27:46 GMT

i tried the suggested solution by Markus but it dooesnt work yet, Any other suggestion ? i program it via USB though

RE: Thingy91 - can't program, won't go into serial recovery mode, no lights

Albrecht Markus Schellenberger — Wed, 07 Apr 2021 08:01:34 GMT

Thanks for the feedback, Gerard! You are still facing the same issue?

Regards,

Markus

RE: Thingy91 - can't program, won't go into serial recovery mode, no lights

gerardmason — Tue, 06 Apr 2021 23:50:43 GMT

Thanks for this! I tried it but to no avail. I'll try one more time and let you know.

RE: Thingy91 - can't program, won't go into serial recovery mode, no lights

Albrecht Markus Schellenberger — Tue, 30 Mar 2021 09:03:26 GMT

Hello Gerard,

have you earlier flashed applications via an external programmer? In that case, the MCUboot on the Thingy91 can disappear which makes it impossible to flash applications without using the debug probe.

The fastest way to restore your Thingy91 is to flash the corresponding “thingy91_ltem_2021-03-04_8e8c6089.hex” file located in the folder “thingy91_fw_2021-03-04_8e8c6089/img_app_bl” using an external programmer. This application has a MCU-bootloader included.

Let me know if you have any more questions!

Regards,

Markus