Of course You should. Sorry if it was confusing - both methods were to try @ parallel, not exclusive. As for getbootstate, we are not sure that my modified version will work, but we're sure (well, at least for 99%...) that correctly tweaked getboostate IS going to at least let You boot device in normal mode. Then, we suppose, that this will also allow You to charge in both normal and R&D mode (if charging chip isn't physically damaged or other bizarre things).

So, even if this getbootstate doesn't work, it's just matter of checking why (that's why still use framebuffer) and fix eventual mistakes. This way, we can optimistically assume that it WILL work, sooner or later, i.e it's only matter of time (and eventually asking someone for assistance, if it turns out that i suck big time and modifying source code of getbootstate).

So, to push things forward, we're waiting only for proper compilation and testing @ Your side.