Device came with a 128GB SD card, but I filled it up with ROMs and ISOs in like a week. Just grabbed a 256 GB one - can I just copy the current ROM folder to the new card, and put it in with no issues? Or would I need to do something more to keep shit safe?
Having firmware on the SD card is unique to Linux handhelds. Android handhelds are basically phones so the operating system is in the flash chip on the motherboard.