Hi, It's looks like I bricked my Thingy:91x . It was working fine when I program it with the target "thingy91x/nrf9151/ns" then later while learning I try program the in the "thingy91x/nrf5340/cpuapp" after that I can't program device anymore in both target any other methods..
I try to connect with J-Link Lite CortexM and nRF52840-DK as debugger but failed. I can see the device in the nRF Toolbox Programmer 
The Thingy:91x USB Logging is the thingy:91x USB Serial and above is the nRF52840-DK debugger.
and when I try to choose the device and Erase all
23:53:32.173
Deselected device
23:53:32.175
Selecting device with the serial number 000683897796
23:53:43.851
Error: Aborted before start executing nrfutil ["device","device-info","--serial-number","000683897796","--json","--log-output=stdout","--log-level","off"]
23:53:43.984
Error: Aborted before start executing nrfutil ["device","x-execute-batch","--serial-number","000683897796","--batch-json","{\"operations\":[{\"operationId\":\"0\",\"core\":\"NRFDL_DEVICE_CORE_APPLICATION\",\"operation\":{\"type\":\"protection-get\"}}]}","--json","--log-output=stdout","--log-level","off"]
23:53:46.692
Error: Failed with exit code 1. One or more device info tasks failed: * 683897796: Timed out waiting for response from worker. (Generic). Message: Operation device-info failed, Timed out waiting for response from worker.
23:53:46.692
Selected device with the serial number 000683897796
23:53:46.692
Using nrfutil device to communicate with target via JLink
This is window I see when I open the Quick Start Guide.
tried to recover with nrfjprog
nrfjprog --recover --log
Recovering device. This operation might take 30s. [error] [ JLink] - Specific core setup failed. [error] [ JLink] - Specific core setup failed. [error] [ Client] - Encountered error -21: Command recover executed for 1074 milliseconds with result -21 [error] [ JLink] - Specific core setup failed. [error] [ JLink] - Specific core setup failed. [error] [ JLink] - Specific core setup failed. [error] [ JLink] - Specific core setup failed. [error] [ Worker] - Encountered error during recovery cleanup, -11: Could not connect to CPU core. This may indicate that AP protection is enabled. Emulator does not support the selected feature (Usually returned by functions which need specific emulator capabilities). ERROR: Recover failed. Please make sure that the correct device family is given ERROR: and try again.
Now, after few tries - the Thingy91X does bot bootup at , no light no device ID form the native USB. Just nothing
Thanks In advance.
