Beryllium: Global vs Russian Firmware

I have bought my Poco F1 (Beryllium) used, and have realized that I probably have a model from India (showing "Poco" on boot, instead of "Pocophone" as another phone of the same model that I have does). I am trying to understand what this means for its firmware and Linux support.

Sorry if this isn't the right channel to ask, I have tried other channels without much success. If you have any idea where else I can find an answer I'd be super happy if you'd let me know!

1. How does the firmware blob that's flashed via fastboot and the *-firmware-* packages that are distributed via the distro's package managers relate to each other?
2. If I flash a different firmware image, I would expect the linux drivers to show different behavior. Is there any risk in flashing the wrong firmware?
3. What determines the correct firmware? Is it determined by a phyiscal difference in the hardware?
4. Has kernel support here been tested for both versions of the firmware (listed here)?

Thanks!