@zamimi
Ok, if you want to try what i would do if was mine i'll make the kit for you. But keep in mind we have at least found out what's wrong with it, so some progress has been made. Up to now i knew exactly what i was doing and was confident i wouldn't make it worse for you. From here on i'm fumbling in the dark a bit and you may end up with the unit hard-bricked with no way to recover it. It'll take me a while to make the kit as i'm busy with other things at present, so standby.

@others
If any of you NSEs who've looked at this thread think my intent in Post #23 is a bad idea or you have other better/safer ideas please post now.