I have three devices from A1 telecommunication (Sercomm Na502) which are also ZigBee and z-wave gate waves. A1 support will last till December. Because of that I am trying to install Openwrt on them. Till now I have established serial connection, installed kernel in ram, established SSH and copied sysupgrade file in tmp. After executing sysupgrade command the installation is successful, the restarting is by itself and Original firmware overwrites OpenWrt after every reboot. Sercomm Na502 has a dual firmware design and kernel 1 contains an automatic recovery image. I don't know how to force modem to read from kernel 2 at the booting
I assume you've seen https://openwrt.org/toh/sercomm/na502#caveats ?
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"If you don't install a valid OEM firmware to image 2 first, the auto-update stored in image 1 overwrites OpenWrt right away."
Yes that is the problem that i don't know how to solve it
Device wiki
"If the device is brand new, connect it to the Internet so that it auto-updates the second image. Afterwards, the device boots always from image 2"
did you try that?
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Connected. Updated. Everything went smoothly after the update. I have openwrt on my sercomm . Than you Pico and frollic
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