Because the Nokia 4.2 supports (introduced with Android 8.0), it can run Generic System Images (GSI). This means you can install Android 13 or Android 14 even though Nokia stopped at Android 11.
Historically required hardware disassembly, but can now be done via Fastboot commands ( fastboot flashing unlock ) if the device is on Android 10 or newer. nokia 4.2 rom
You won't find official ROMs on Nokia’s consumer website. Instead, you need to use or look for NB0 files . Because the Nokia 4
Modifying the software on a Nokia 4.2 involves navigating HMD Global’s restrictive bootloader policies. While the device was originally part of the Android One program nokia 4.2 rom
A: No. There is no official build. Only unofficial GSI ports or community-maintained device trees.