Device status LED is breathing cyan but can't flash image

Hello,
Im using Boron 2G/3G with internal eSIM in Armenia, after successful first flash of any example code device restarts and status flash is breathing cyan but I can’t connect to device anymore, in web console showing last successful flash date and can’t contact with device(signal,ping) until device reset.
Cloud debug tool and cell tower scan shows that everything is normal but in use it is not always convenient to restart the device every time when need to update image.
What could be the cause of this problem?
(when trying in other regions, no such problems were reported with the same coverage)

What version of Device OS is on the device?

now 4.0.1 but tried with 5.3.0 again it didn’t work

Hello, any suggestions as to what could be the problem?

Hello @rickkas7,
any suggestions how I can solve the problem?

Regards,
Hambardzum