back up firmware yes
but you rplayer may look the same as other players on the outside only, and on the inside will be different so other firmware will not work for you
it s complicated but these players are made by many different factories and one firmwrae can notwork on another
your player will never have any updates as it is a basic player with NO SUPPORT, this is how the player is o cheap
sorry, but do not try other firmwares or you will break the player, BUT do make a backup of the firmware for times when you will have problems
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