Greetings!
We have been using an nRF52840 Development Kit for a while now and have been performing FW updates OTA (between the same 3 FW images, cycling and updating between them many times) by using the CLI commands of MCUMgr such as:
mcumgr --conntype ble --connstring ctlr_name=hci0,peer_name='Feel Gen 2 - 53615210' image list
These updates were performed smoothly with no issues and the nRF52840 was always responsive (always between the same three images).
This DK was stored away for two weeks and was revisited today to perform an update once again ( no one had access to it or changed its FW, I am the only person who worked on this and found it intact as expected )
Now after trying to perform the same MCUmgr commands(for the same three images) as I had been doing in previous weeks where they worked without issues, I am getting the following error message:
Error: ATT request failed: input channel closed: io: read/write on closed pipe
However, when performing the updates using the nRF Connect Android app they are performed correctly.
Nothing changed in the FW, DK or the PC being used to run the mcumgr commands. What could cause this behavior?
Nothing changed in the procedure, it was for a demo I had prepared a few weeks prior and now that its time to perform the demo its not working. I have confirmed that everything is exactly the same as two weeks prior. The only thing that changed was that two weeks passed.
Thank you for your time and I look forward to hearing from you!
Best regards,
Stavros
