Simple question, why do you have to up date it? Use it for what it is, a cheap gun. I also have the same gun and love it for what it is. It’s now running a TM stock gear box. Other parts were leftovers from upgrades from other guns. If you think it’s a piece of crap than use it until it falls apart, you might be surprised on how long it lasts ( or it really is a piece of crap and it brakes the same day). Or sell it to me
. It’s always nice to have a loaner as a back up.