December 30, 2021
May 14, 2015
Nothing about…. BUT…
As seen here :-
The V90 has the same specs/firmware of the original Pocket Go (and its clones), so you would be better off using the Custom Firmware developed by the community (it even has some advantages, such as better performance and fixed screen tearing, as I’ve read).
Take a look here, they explain how you can flash the firmware on a SD Card.
THEN, I only seen this > https://www.arcadepunks.com/64gb-pocket-go-loaded-image-from-808-retro-complete-with-latest-cfw/
which is a couple years old so may need to grab from usenet.