Re: If I try to change keyboard it wouldn't change.
 

what is the stock radio version? I thought you said he didnt have any radio but i guess its part of the rom.
Will modifying the radio change the SAR rating also?

with good things2life cleanup i have about 103mb free ram on startup but i guess a custom rom would still be more stable wether it has less RAM on start up or not.

Re: If I try to change keyboard it wouldn't change.
 

Lot of good advice given already, get back into settings as already stated, even a soft reset should enable your keyboard (prior to a hard reset), somethings obviously been left out here.
If you do get it back visit this
SIPChange: Changes the DefaultIM in AKU2 - xda-developers
it'll settle your SIP keyboard issue for sure.
Hope this helps a little.