mcumgr hangs during image upload

[dkhayes117]

I have a thingy91 that has been flashed over JLINK which has wiped out the MCUBoot.  I'm attempting to get it back using mcumgr.  I have mcumgr all setup, but when I run

mcumgr --conntype=serial --connstring="/dev/ttyACM4,baud=115200" image upload thingy91_asset_tracker_v2_ltem_2022-06-02_880c82db.bin 

nothing happens after the progress bar appears.  It just stays at zero percent.  I check to make sure I have correct ACM port each time.  I'm running on Ubuntu 20.04.4 LTS.  Any ideas what I'm doing wrong?

When I try to connect to LTE Link Monitor v2.0.1, the ttyACM port shows up and the logs shows Modem port is opened.  If I try to run an AT command, I get a timed out message.

[dkhayes117]

Looks like I got the LTE Link Monitor working.  I must have still been in MCUBoot mode after I flashed the hex file.  I flashed it again and power cycled and I can run at commands now.  Still no network connection yet though.

[Sigurd Hellesvik]

Good to hear that you got to the AT commands!

If you face issues related to the network connection, it would be nice if you create a new ticket on that, to keep DevZone tidy.

Regards,
Sigurd Hellesvik