Develop Bugs

Dead Z1C - once again

Hi guys,
I know it's been posted like a million times, but I've got a dead Xperia Z1C. Powering with neither of volume buttons does not work and the mysterious red button next to the SIM tray does nothing as well. PC does not recognise the device, however it shows, that some kind of a usb device is connected. Phone's red indicator of charging is on and working, apparently it's the only thing that is working.
Is there any other way to turn it on, or do I have to contact the retail service?

I had perhaps the same problem with my z1c. I manage to recover by:
1. Press vol + and power button. The phone vibrated 3 time.
2. Press vol - and connect the usb cable to pc (flash mode).
3. Open flashtool and flash 157 Rom.
Sent from my SM-T315 using XDA Free mobile app

I have tried holding all the button combinations - none of them worked - the phone never vibrates no matter how long I hold the buttons. Got the phone to the retailer, I hope the previous owner has not voided the warranty somehow...

[Q] hard bricked desire 300

hi guys!
my friend's htc desire 300 was turned off and not to start normally,
i tryed to go hboot by holding vol+ and powerkey but not happen,
when i connect to ac charger or pc usb only shoes a black screen and aempty battery that charging but not charging!.
when i press vol+ and vol- toghether and connect to pc usb then windows know as Qualcomm CDMA Technologies MSM .
can i unbrick this phone?

Z5 Premium Dual - Does Not Turn On...

I did a software update recently on my Z5 Premium Dual E6833, and when I look at it later it was off! I tried to turn it on, but it was unresponsive. No signs of life at all. Its completely dead. OFF button in SIM slot does nothing, even if I hold it for more than two minutes. No charging LED light when connected to wall charger. When I plug it to my PC, it was being detected as "Unknown Device". Tried loading some ADB driver but it was not accepting it. Tried few different chargers and cables as well. Also Volume Up + Power does nothing at all, same for Volume Down + Power...
Looks like it runs out of charge when it did a software update, it was still have more than 50% when I started the software update. ..
Can anyone guide me on what to do next? I am in the middle of the desert at the moment for the next three weeks, and no access to any local service center. Thank you in advance for any advice that you might have... :crying:

i am worried since you did the volume up + power button trick!
charge your device over night , hold the volumeup+ power button for atleast 15 seconds , the device must jerk thrice! remove fingers on second jerk . the device will shutdown . at this point connect device in flashmode and flash the kernel!

Thank you for your reply, appreciate it! I have tried that trick of holding the Volume Up + Power even up to 30 seconds, but for some unknown reason, it does not vibrate at all. I have tried it on numerous occasion but the vibration was not coming at all...

Phone is displaying a black screen after two spontaneous reboots

Unlocked Pixel XL is completely unresponsive after two spontaneous reboots. Shortly after those, while on Twitter, the phone just blacked out and is now completely unresponsive. Holding the power button does nothing, and plugging it into a charger does not bring up the charging icon or anything for that matter. When calling it the line was ringing, but the phone was completely silent. After swapping SIMs out, this is no longer a symptom. Connecting the phone to my PC shows a "Qualcomm HS-USB QDLoader 9008" device in device manager under COM Ports (COM & LPT).
It sounds as if my phone is bricked. A classic fix would be to just replace it. Unfortunately, I need the phone for the next few days and I don't have access to the vendor who sold it to me. I found this guide to unbrick devices that show up like this. Is it worth following?

Hard bricked HTC one M8

So it has been 2 years since my M8 got hard bricked, however staying home during this quarantine got me thinking if i could try and fix it or not, so 2 years ago
i took my M8 out of my pocket it was not responding and slow so i restarted it and since them all my phone shows is a black screen, when i try to charge it the battery icon doesn't appear still the same black screen, just for a brief second after plugging it to charge the orange light up there flickers and then nothing more, when i connect it to the pc it's recognized as qualcomm hs-usb.
My M8 was with unlocked bootloader, but S-ON, had TWRP installed on it.

Maybe you can replace a new battery, which will give a hope.

Exactly the same issue here, but tried a new battery, no go. Have you managed to find anything since last April ?

When the brown light blinks and doesn't turn on it usually means the battery is too low to turn on the phone to display that its charging, normally it takes a few seconds or minutes depending on your charger, if it does turn on in a few minutes in my experience it means your battery is dead.
Another trick I was told about is holding the power and volume down button for 15secs while plugged in then hold the power button for 10secs.

asmiledoeswonders said:
When the brown light blinks and doesn't turn on it usually means the battery is too low to turn on the phone to display that its charging, normally it takes a few seconds or minutes depending on your charger, if it does turn on in a few minutes in my experience it means your battery is dead.
Another trick I was told about is holding the power and volume down button for 15secs while plugged in then hold the power button for 10secs.
Click to expand...
Click to collapse
Any chance you could confirm that when plugged in to the pc it's recognized as qualcomm hs-usb. I got a feeling the bootloader got creamed, i believe it should be showing up as a HTC something...

ShadowGato said:
Any chance you could confirm that when plugged in to the pc it's recognized as qualcomm hs-usb. I got a feeling the bootloader got creamed, i believe it should be showing up as a HTC something...
Click to expand...
Click to collapse
I tried it briefly with my dead battery phone and it did not appear because it went off right after the boot screen, i
Have you tried to leave it in the charger and see if the blinking brown light turns green indicating full charge, alteast that way you can rule the battery out as the problem.
From the little googling this is the best answer I could find
Qualcomm HS-USB QDLoader 9008 is all that is left from my M8
Hi, my M8 doesn't turn on anymore. Already tried to change the battery, already tried to start it with VOL+ vor a couple of minutes, tried VOL+ and VOL- for a couple of minutes - nothing. I can't get into bootloader, i can't boot the phone -...
forum.xda-developers.com

asmiledoeswonders said:
I tried it briefly with my dead battery phone and it did not appear because it went off right after the boot screen, i
Have you tried to leave it in the charger and see if the blinking brown light turns green indicating full charge, alteast that way you can rule the battery out as the problem.
From the little googling this is the best answer I could find
Qualcomm HS-USB QDLoader 9008 is all that is left from my M8
Hi, my M8 doesn't turn on anymore. Already tried to change the battery, already tried to start it with VOL+ vor a couple of minutes, tried VOL+ and VOL- for a couple of minutes - nothing. I can't get into bootloader, i can't boot the phone -...
forum.xda-developers.com
Click to expand...
Click to collapse
Thanks for helping, i''ll fiddle some more with it once I find some Schematics.