Default Goclever 7500 | Wi-Fi or touch panel not working after update

Hi

After update android to 4.2.2 Wi-Fi not working on: Kernel 308 Tab7500 Goclever.
If I use Kernel 308 Tab R75 Goclever - touch panel not working

On Kernel 308 Tab7500 Goclever in "about tablet" I have about 300MB RAM.

ROM: http://crewrktablets.arctablet.com/?p=1873


I don't know how to fix it.