XT2419-1 model. "No valid OS found" and It rejects everything, fastboot unlock, flashing latest update package pulled from LMSA, no blankflash option cuz EDL key combos are refused too. LMSA whines about incorrect parameter values after reaching a 24% flash, so that's the only thing the phone doesn't reject right now. I need someone with hardcore tools so we can set up a remote pc share, since all the free options are exhausted.