Motorola XT1621 (2016) Hardbricked or burnt ? - Android Q&A, Help & Troubleshooting

Hello , my question is about a motorola moto G 4th (xt1621), the device stuck on black screen while i was flashing and updating firmware i believe I shuffle by mistake some files from one firmware and another , now the only living signal i have from it its a blinking led while the device its charging and pc usb recognize it like "qhsusb_bulk" , doing some research found all stuff about blank flash try it with out success (no mbm release or something ) so decided take it to service , after some days they told me there are some damaged components that can be changed so they have to change entire PCB , now i am not pretty sure what to do ? please can give me some advice?

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i5500 problem with jig and entering download

hy guys,so recently I flashed gt i5500 with wrong firmware,some deoxed for s2 and samsung was hard bricked,it would not enter download mode even with jig so my dad took it to local service and they were in hurry so somehow they restored it to previous rom I had flashed it before deoxed and it was working perfectly,wifi and other functions,altough sim card was accepted,he didnt want to connect to network,normally he found network but didnt want to connect
so I restarted mobile phone,and now for some reason it wont start,I tried entering download mode with jig to flash another ROM,but no life signs,there are only white colour over black,so basically he is somehow "alive"
I didnt do anything him to cause that,and I don't know what to do next ? :crying:
no one knows anything ? some people say that he messed up with EFS,some say he deleted IMEI number ?
sorry for another BUMP,this forum is far less visited than others,I was today at local service and dropped my i5500 for repair,he checked battery and by voltage he concluded that maybe battery is completely dead and thats why phone wont even start
could that be reason ? i get white screen loop also when I connect to charger

Hardbricked SGS3 i9300 GSM

So my phone was charging like usual via usb , in my laptop y have triple boot , windows , linux and tails , so here is the thing , my SGS3 is running a custom rom and as usual they come with a "backed in kernel" into it , it was charging fine as usual and my screen glitched out like crazy with colours (static glitch) , i put the battery out and when i try to power the phone on again , nothing , no leds , no download mode , nothing as if the phone didnt have a battery so i think is a hardbrick , ive tried several methods with no luck , the most efficient one (SDCARD boot) gave me a screen saiying sdcard boot mode , and its stuck in :
sdcard download failed (with red letters)
ive heard that there is a resistor that needs to be short-circuited in order for the boot to copy the binaries , someone has this problem ? or knows what resistor should i short ? i have a jig and im currently making a UART cable (RJ45) , i know that it can be shortened using tweazers my full phone model is :GT-l9300 FCC= A3LGTl9300A
Thanks in Advice, xda friends !

Is it hardware issue if phone only displays logo, but flashing doesn't help ???

My sony walkman wt19i just stopped displaying anything on the screen one day, just backlight. Android also wasn't booting up, since I coudn't receive call not pc recognised the phone. So I tried flashing it with official firmware with flashtool, nothing changed.
So I took to service shop, they said its display and I need new one, which was expensive and they were not even sure if they could get it since its older phone. So I gave up on that.
That would be the end of it, but today I tried turning it on again and voila ! it displayed sony logo and animation that follows it. Android booted and pc recognised the phone, but still no display on android.
So I am wondering what is going on here ? People at the service shop were wrong, because if it was dead display then it couldn't display sony logo and complex animation that follows it, right ?
If this is not display issue, then what it is ? There is still only backlight and nothing alse shows up once android starts.
If flashing doesn't help, does it mean its a hardware issue ? Is there anyway to fix this phone ? What could be wrong ? Any help is welcome
Nobody can help me ? Somebody has to know atleast does this sound like software or hardware issue ?
Anybody ??? Should I just throw away this phone ?
Bump

[Q&A] Blu Life 8 l280a MT6592 Hard brick, Respond to Flash but still Dead

Hi, i have a Blu Life 8 (MT6592) and this is my story...
After an apparently soft brick that endend in a Infinite Black Screen Bootlog i tried to make a Format with SP flash tool (that was idiot by my part, without any meeting of this) and now a i have a FULL HARD BRICKED PHONE NO FAKE 4K...
But i have the hope of you guys can help me.
The phone doesn't turn on, when i connect the usb cable it doesn't seems like if charging or nothing, apparently dead no?... Well this is the magic thing, when i try to Flash again the Stock ROM it Works!... yes, i looks like if doing something, complete the progress bar of flashing and says it's "OK" but really doesn't nothing, still not boot, no charging log, no blu logo, no android logo... What you think?

help!!

i have this gear s , i tried to install cm on it but the flash wasn't clean and the watch refused to boot and when i tried to flash it it refused every flash , tried every rom provided on the internet but nothing worked so i took it to a repaire service may be they could find a solution for it , but they made it worst they broke the bootloader and now everytime i plug the watch to computer or battery , the screen gets black and nothing happens , and it shows on device manager as qualtcomm usb serial , i think i need to reflash the bootloader , anyone can help me or guid me how to do it ?

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