thingy52 fail to update

[Frankie211]

I don't know what happened to my thingy 52 after lots of firmware updates with Keil+Jlink+thingysdkv210 and nRF connect operations. The LED on thingy isn't flashing any more and device memory layout is unable to fetch on nRF connect as well. I tried to do DFU through mobile app by pressed the button but fail to find the thingy52 device. I don't have a nRF52 DK for updating but with J-Link + Keil instead.

what can I do to solve this question?

It looks like an nRF52 DK is necessary to update thingy52 with nRFgo Studio. Is it correct?

best wishes,

Frankie

[Kenneth]

Hi,

Any SEGGER j-link should be able to recover the thingy:52. You may try to install the latest nRF command line tools, and run from command line: nrfjprog --recover

Make sure to connect SWDCLK, SWDIO, GND and VDD.

You may try to double check that the reset pin is logic high, if not connect, then try to connect it to VDD to ensure it's not stuck in a hard reset.

Kenneth