Serial1 doesn't work after firmware update. Needs power cycle to work


Its been happening since firmware 1.4.4 or little before. I am using Serial1 and right after a firmware update via OTA or via DFU, Serial stops sending/receiving. After power cycling, and not just a button reset, Serial1 starts working again.

Need help to resolve. Current firmware vision of 2.2.0 still has this issue.

Hi- Are you getting any errors?

Apologies for the late reply.

No errors at all.

No worries. How often does this happen?

It happens repeatedly after a firmware update - either OTA or DFU.

The only way to cure the situation is to power down and power up. A hardware or software reset doesn’t help cure it.