[Xperia Z5 Premium Q&A, Help & Troubleshooting] xaser66:
Hello!

Well, I had the really bad luck of a very bad hard brick... my xperia was on low battery (around 15%) the last time that I use it, then around 20min later I got it and try to check, but screen didn't turn on, and the Led was blinking White color, since I deal in the past with this issues (around 3 or 4 times), I connect the usb cable to power adapter and simply did the reset button under sim flap, and my phone made the normal 3 vibrations, so, I hope that everything was fine, however, after that, I simply try turn on it, but never happen, No led of charge, no more vibrations and no power on, no signal of operation at all... so, I test remove and reconnect the usb cable and nothing, so, I try make another sim flap reset button test, but at this time and until now, no more 3 vibrations response and nothing else... and now, after reading some many posts, and try everything suggested in other posts about I really sad and hope for some help or feedback, if somebody may help...

By now I tested on my windows 7 notebook, and at first the phone was not recognized by drivers however it shows the bad message QHUSB_BULK error usb device, in later attempts, I made after some buttons tests looking for some response I got the phone change the messague, at the moment of connect it with usb cable to my pc, it was recognized as SEMC Flash Device... In both cases windows didnt allow or recognized for a proper driver installation....

But after other attempts, I lost the SEMC Flash Device status, and by now not remember what I did to get this mode or if it may be of some help...

By now I am really worry, since I got my phone from Hong Kong, and it came and worked fine until today, but in my country there is no service for this model since it not still on sale at official dealers/ carriers, and I believe that I don't have warranty service (since is an international purchase and not on local dealer) and also because I Unlock Bootloader for getting root and Sony records that information for warranty purposes (since I unlocked BL, I installed TWRP then I installed the romAUR custom rom and I upgraded it to 1.25 version with last kernel available from the same rom thread but thas was a month ago and phone worked fine after all custom rom installation)...

By now, I would like to ask if may be possible please, some guidance and help...

1) I was made attempts by the last 6 hours after brick without luck, and I wonder and suppose that the battery may be very low, but since I don't get any charging led, I wonder if by left It connected to the original sony charger with original sony cable (almost new and working both, and also tested both with other cell), my bricked phone may still get some charge on the battery.... somebody konws if possible to charge an xperia bricked?... I wonder/hope about that, if may be a charged battery may help in got the 3 vibes reset again that I hope may fix the issue and return my phone to boot...

2) Since seems that i don't have chance to get repair service on warranty since I unlocked my phone (and in my country the cost service for such model could easily be so high as almost a new phone), and also low chance for a warranty replacement from seller, I wonder about take the chance of open it and try to remove battery connector at a last resort since , I may suppose that this may allow for clear internal electrical charged registers of system and may allow me for a reset, but I wonder if the white flap sim buttons really did the same, that is simply open the battery connections, but, I doubt about that, since in this procedure the cel made 3 vibes and the energy for the vibes need to come form a connected battery...

3) May somebody with more luck, knowledge and experience, may suggest or share some help or advice about this issue...

I am a long time cell phone fan and long time in the issues of unlocking and installing custom roms, but until today, and after I survived many other phones bricks, my highest and loved phone of all my time, is bricked in a way that I am start to desperate, since I almost no clue by now about what could I try looking for a fix....

So, thanks in advance and if some body may help, I would be very grateful....