Develop Bugs

[Q] Help!! a100 Blackscreen

i have a a100 with the latest flexreaper rom installed and im stuck with a pretty serious issue:
a couple of days ago the tab was acting real slow and sluggish and getting bad battery life didnt think nothing of it so i just rebooted a couple times and left it alone . all was good untill the battery hit 10% and i plugged it up using the factory ac adapter. the next day (maybe 6-7 hours later) i went to turn it on and nothing no vibrate no screen flash nothing; other than the power button turning blue as i pressed it and it would stay on for a couple hours but still no other response from the tablet.
im at my wits end on what could be wrong and now i got my wife with her foot on my neck till i get it fixed. can anyone help me?
ive tried to do a hard reset with the reset button tried to boot into recovery /bootloader no dice
(also my home button flashed a couple time i pressed the power button) dont know if its relevant but wanna get as much info out as possible

wondering if anyone can help me...

frenize said:
wondering if anyone can help me...
Click to expand...
Click to collapse
It may take awhile for someone to see this and form something to try, random bricking for no reason is rare, its almost always some error by the user. However have you attempted adb connection to it? Leave it powered off, connect to the PC you used to unlock the boot loader then power on. Does the PC make the USB connect sound? Does the Acer vibrate? Did the home key blink again?
It really sounds like your boot partition is wrecked which wouldn't normally happen outside of flashing. If boot loader is trash then it won't know what to do and just sit there. No recovery or anything else.
Tapatalked from my Galaxy S II.

pio_masaki said:
It may take awhile for someone to see this and form something to try, random bricking for no reason is rare, its almost always some error by the user. However have you attempted adb connection to it? Leave it powered off, connect to the PC you used to unlock the boot loader then power on. Does the PC make the USB connect sound? Does the Acer vibrate? Did the home key blink again?
It really sounds like your boot partition is wrecked which wouldn't normally happen outside of flashing. If boot loader is trash then it won't know what to do and just sit there. No recovery or anything else.
Tapatalked from my Galaxy S II.
Click to expand...
Click to collapse
it made something like the connect sound but instead of the regular duh doom sound it did a dadadoom (kinda hard to describe the sound) but it was faster than ive ever heard the connect sound before which is weird. the tab didnt vibrate and it seems the home button blinks when the tab is dead and needs recharged

frenize said:
it made something like the connect sound but instead of the regular duh doom sound it did a dadadoom (kinda hard to describe the sound) but it was faster than ive ever heard the connect sound before which is weird. the tab didnt vibrate and it seems the home button blinks when the tab is dead and needs recharged
Click to expand...
Click to collapse
Yeah I know that sound it means USB connected but error for some reason. Its been shown if this thing dies all the way down it wont read the battery correctly and probably needs to be sent in. Before that I personally would unplug it open it up and remove the battery for awhile, maybe an hour then put it back and plug it in. But thats me, not the advice I'm giving. If you have warantee on it use that.
The batteries on a lot of devices and laptops etc have something of a fail safe, if the voltage drops below a certain point it trips to prevent cell damage, however it renders the battery useless.
I haven't searched out much past that if a reset is possible by us, but it seems the pack is trash after or needs sent in.
Since this is a sealed unit you void warranty opening it (well unlocking the boot loader did too) so you can't send it in for repairs without paying for it.
I hope someone can jump in and help figure this out, and prove me wrong.
Tapatalked from my Galaxy S II.

Weird, This exact same thing happened to me. Used it in the morning and now after work it won't turn on. I had already tried disconnecting the battery, but hadn't thought to leave it disconnected for an hour. My tablet has been running the leaked ICS since it came out and The last factory reset it had was about a month ago. It was working fine up until this. The power button seems to be responding correctly, the issue is that after the LEDs light up, there is no vibration or display. I hope someone can help us with this issue.
EDIT:
It won't connect in ADB mode. It will only appear on my computer as an APX device and since there is no vibration I am unable to boot into fastboot. Any help or suggestions? All the threads I have found have involved booting into fastboot.

i am also having this problem. i set ti backup last night to save to box i turned it on this morning it.worked set it on the charger came back to a frozen screen. I turned it off now just a black screen it turns on or the home button dose but nothing comes up on the screen

same thing here.
max69power said:
i am also having this problem. i set ti backup last night to save to box i turned it on this morning it.worked set it on the charger came back to a frozen screen. I turned it off now just a black screen it turns on or the home button dose but nothing comes up on the screen
Click to expand...
Click to collapse
I have been using ICS the leaked one, and last night I was goint to check my email and it did not turn on, I though the battery died. I plugged to the charger and this morning I tried to turning it on but it failed. I did the reset pin but nothing. I connected to the computer and it was recognized as a APX device and installed a driver ACER Picasso USB recover but i cant access anything. I am a nob. Thanks

A100 blackscreen
i am also having this problem. last night. just a black screen it turns on or the home button dose but nothing comes up on the screen. :crying: Help!!!!!!

Has anyone tried holding the power button for a while? Laptops do this too, if someone felt ventures, try taking the battery out and hold the power button. No promises, might work.
sent from my ICONia

same here
Having the exactly same issue, here...
I also tried to hit the hardware reset button and it does not help.

If the screen is blank while powered on its in failsafe mode, in other words is bricked, has to go to Acer.
Tapatalked from my Galaxy S II.

This just happened to me a few weeks ago as well. If you are still under warranty send it in to Acer, thats what I did. I just got an email saying they had fixed it and were sending it back for free!!
At the time I was on the 9/02 JB build. I wonder if this issue is caused by faulty hardware or if it is an issue that was made by rooting and unlocking it? I don't know enough about this stuff to answer that though, but it does make me think whether I should root/unlock it when I get it back or leave it stock.
Also thanks Pio_masaki for helping me a few weeks back wasn't sure if I was even going to send it in until you said they most likely won't be able to tell.

I highly doubt they even CARE when sending these in. They will void for physical damage most likely.

tshm55 said:
Having the exactly same issue, here...
I also tried to hit the hardware reset button and it does not help.
Click to expand...
Click to collapse
Ohmygod,
Same here, but it's 3 years ago. Sorry for digging the topic. Still no hope? I still keep the tablet and have just buy another refurbished mainboard to replace but still no vibrate and blacksreen still there.

[Q] HTC One V Frozen on "Thisbuild is for development purposes only"

Hey
My friend asked me to fix his phone. He said he turned it on one day and it booted to a screen that said "This build is for development purposes only. Do not distribute outside of HTC without HTC's written permission. Failure to comply may lead to legal action"
I would just restart the phone and reflash everything but I can't restart the phone, I've tried holding the power button for like 5 minutes, holding the down volume and the power button, and holding the up volume and the power button. I've even tried holding all 3 buttons
I just can't seem to get it to restart.
I connected it to my pc and a windows pops up saying installing android phone deivce, so I tried to connect to it with adb but adb doesnt recognise it.
Anyone got any ideas?
Thanks in advance,
Darragh

Forgot to say I'm waiting for it to die

Darr111 said:
Forgot to say I'm waiting for it to die
Click to expand...
Click to collapse
No ADB no fun I'm afraid. The button needs to be held down for over 8s to cause a hard reboot, they are also notoriously rubbish, so its worth trying a few times and really pushing some.

mcgi5sr2 said:
No ADB no fun I'm afraid. The button needs to be held down for over 8s to cause a hard reboot, they are also notoriously rubbish, so its worth trying a few times and really pushing some.
Click to expand...
Click to collapse
Yeah, The phone is dead now, so I'm going to let it charge over night and try boot into the bootloader in the morning.

Fix it
Phone died, I charged it a bit and turned the phone on and booted in to the bootloader fine and sideloaded a new rom. Works grand now
:cyclops:

Sony Xperia Z1 compact - Hard Brick?

Hi,
some weeks, maybe even 2 or 3 months ago, I tried to root my Z1C because I wanted to be able to use tcpdump. I didn't want to use KingRoot because of some warnings I had read about it, so I decided to flash a new image onto the device. I could kick myself for doing this in quite a busy time but I somehow hurried through it.
After that I rebooted the device and it didn't come back. The only thing I saw after booting was the Sony logo which just stayed forever. Even worse, I recognized I wasn't able to turn it off anymore by holding the power key!
Having done that for my job (app developer) and needing a device for testing I bought another phone for about 100 €, and thought of the Sony as a permanent loss. Because there was much stress in my job at that time I didn't immediately try to fix this, but now, after some time has passed, I wonder if I can do anything to resurrect the device. If not, I won't need to bother anymore. The situation right now is unsatisfying, I have it lying around because there might still be hope, on the other hand, I have no clue what to try.
I can only turn it off by draining the battery, which is relatively easy. The screen stays on all the time showing the Sony logo, and the battery drain is high in this mode. I'm not really able to press any buttons on boot because I only have one try at the exact moment the device starts up after leaving it connected to the charger for some time. After that, I have to drain the battery again to reboot it.
This might be a question of the perfect timing, but I'm not sure. For me, the fact that the power button doesn't turn it off sounds like it has been hard bricked by installing a kernel that didn't match. In this case, holding any of the other buttons at boot time won't do anything, too. Unfortunately, I can't remember what thread I followed, so I can't tell for sure if it was a kernel mismatch... Any ideas? Or should I just dump it and forget about it?
Thanks in advance for any advice
Oliver

olik79 said:
Hi,
some weeks, maybe even 2 or 3 months ago, I tried to root my Z1C because I wanted to be able to use tcpdump. I didn't want to use KingRoot because of some warnings I had read about it, so I decided to flash a new image onto the device. I could kick myself for doing this in quite a busy time but I somehow hurried through it.
After that I rebooted the device and it didn't come back. The only thing I saw after booting was the Sony logo which just stayed forever. Even worse, I recognized I wasn't able to turn it off anymore by holding the power key!
Having done that for my job (app developer) and needing a device for testing I bought another phone for about 100 €, and thought of the Sony as a permanent loss. Because there was much stress in my job at that time I didn't immediately try to fix this, but now, after some time has passed, I wonder if I can do anything to resurrect the device. If not, I won't need to bother anymore. The situation right now is unsatisfying, I have it lying around because there might still be hope, on the other hand, I have no clue what to try.
I can only turn it off by draining the battery, which is relatively easy. The screen stays on all the time showing the Sony logo, and the battery drain is high in this mode. I'm not really able to press any buttons on boot because I only have one try at the exact moment the device starts up after leaving it connected to the charger for some time. After that, I have to drain the battery again to reboot it.
This might be a question of the perfect timing, but I'm not sure. For me, the fact that the power button doesn't turn it off sounds like it has been hard bricked by installing a kernel that didn't match. In this case, holding any of the other buttons at boot time won't do anything, too. Unfortunately, I can't remember what thread I followed, so I can't tell for sure if it was a kernel mismatch... Any ideas? Or should I just dump it and forget about it?
Thanks in advance for any advice
Oliver
Click to expand...
Click to collapse
It used to be that holding vol up and power for 2 or 3 seconds would power off. I'm not sure why, but with certain AOSP toms starting with LP 5.1, you would have to hold the buttons for 8 - 10 seconds, then it would power off, and without the usual 3 vibrations. Try that out. I would be surprised if it was really hard-bricked just from a bad flash. Try fastboot with a custom kernel and recovery IMG, and see if you can get into recovery.

levone1 said:
It used to be that holding vol up and power for 2 or 3 seconds would power off. I'm not sure why, but with certain AOSP toms starting with LP 5.1, you would have to hold the buttons for 8 - 10 seconds, then it would power off, and without the usual 3 vibrations. Try that out. I would be surprised if it was really hard-bricked just from a bad flash. Try fastboot with a custom kernel and recovery IMG, and see if you can get into recovery.
Click to expand...
Click to collapse
Thank you SO much! I wasn't really able to boot using power and volume up, BUT after your encouraging words and the idea that I might just be using wrong keys, I researched some more and found out about this little red button within the sim card slot! It allowed me to reboot, get into fastboot, install recovery and cyanogenmod afterwards! I'm happy again

Xiaomi MI9 SE after reboot in recovery complete dead.

Hi there,
before I send the mobile to my reseller i want to ask if any of you may have a solution.
Yesterday I tried a normal reboot to recovery. The phone went off and then did not go on again. Nothing happens when i press the power button with or without volume buttons.
Even if I connect the charger, the phone does not show anything. It is completely dead
thanks for help

No signs of life? Try holding the power button for 30 Secs...or pushing the power button multiple times if u managed to boot into fastboot or recovery...your should be sorted

eagle*23* said:
Hi there,
before I send the mobile to my reseller i want to ask if any of you may have a solution.
Yesterday I tried a normal reboot to recovery. The phone went off and then did not go on again. Nothing happens when i press the power button with or without volume buttons.
Even if I connect the charger, the phone does not show anything. It is completely dead
thanks for help
Click to expand...
Click to collapse
Hi,
I had one mobile which did that after an update (it was a Zuk Z2 pro). Really no sign of life.
I let it a part for like one week and the battery went completely down. I tried to charge it after one week, and the phone turned on magically. I guess the update just broke the theorical level of battery so went it was completely empty everything was ok.
But it seem different for you. I guess I would try long press on the 3 buttons, or at least volume down and power, which can bring you to fastboot mode and you will be able to flash with miflash tool.

@eagle*23*: Any news? Did you revive him?

thanks for your answers, forgot to set notification on replays.
The idea with wating till batterie is down looks good idea but i already sent it back to reseller now because dont what to wait so long without the handy drug
The idea with push the Buttons in different combinations i tried several times but did not work.

It's still on guarantee so it may be your best option.

I have the same problem. can anybody help me? did anyone get solution to the case? My case is identical to yours.

manguita22 said:
I have the same problem. can anybody help me? did anyone get solution to the case? My case is identical to yours.
Click to expand...
Click to collapse
Looks like there are not many solutions yet. You could open the Phone but the Flash with this method seems to be stoped by Xiaomi.
One good thing is that it looks like they dont care if your Phone was unlocked or not

Nokia 6.1 seemingly hard bricked after reboot

I have a Nokia 6.1 TA-1043. I have not unlocked the bootloader, and it runs the default operating system (Android One, probably Nokia flavoured). It has gotten slower over the years, and it had a period where it crashed every now and then (sudden reboot). Anyway , some days ago I decided to reboot the phone because it was slow, and it instantly shut off. After waiting probably 20 seconds without response, I decided to hold the power button down to force it. I don't remember exactly what I did, but after trying to again hold the button down to turn it on again, it vibrated as usual but the screen remained black. I then most likely tried holding volume + and power to force another reboot, unsuccessfully. I then tried holding volume - and power to enter download mode. It might have vibrated, or I might have touched the cable making me think it vibrated, but nothing happened. I pressed some random buttons after I think.
Now, the phone does seem to charge. It gets warm when I plug in the charger. I've searched for hours on different forums, and some people say that their phone was magically resurrected after the battery went completely flat after few days. I have tried plugging the phone a bit and testing every button combination (including volume +, volume - and power at the same time) for a few days now. It's dead.
The phone is also seemingly not recognised at all on my windows 10 PC. Haven't tried on Linux.
I have a few theories:
1. The phone simply hard bricked itself due to some hardware failure.
2. I bricked the phone by (blindly due to screen being blank) entering recovery mode and unknowingly factory resetting the phone and shutting it off mid process.
3. The battery is messed up? Some suggest deconnecting the battery. It would require the use of a heat gun to even open the phone though.
I've seen some people suggest entering EDL-mode either by shorting some pins or using a modified USB-cable. However, that would either require opening a phone that isn't supposed to be opened easily, or plugging a modified USB-cable into my computer, nether of which seem safe. I've also seen people mention that whatever needs to be flashed in EDL-mode must be signed by Nokia, which I can't do obviously haha.
It's probably time to move on right? Has someone managed to get a phone in that state to work again?

Hi i can explain some of your theories:
The first one: It's impossible to make the phone hard bricked itself.
The second one: Factory reset is only wipe your data not the OS itself so if you Factory reset and force reboot it should get in to Download mode and you need to unlock bootloader to reflash the ROM. (I'm not in that situation so I'm not sure it's correct or not.)
The third one: No, I don't think so.
That's all so if you have any question ask me. Thanks!

alprtewwqfr said:
Hi i can explain some of your theories:
The first one: It's impossible to make the phone hard bricked itself.
The second one: Factory reset is only wipe your data not the OS itself so if you Factory reset and force reboot it should get in to Download mode and you need to unlock bootloader to reflash the ROM. (I'm not in that situation so I'm not sure it's correct or not.)
The third one: No, I don't think so.
That's all so if you have any question ask me. Thanks!
Click to expand...
Click to collapse
Thanks for replying My phone seems unresponsive, so I haven't managed to get in to download mode, at least not visually on the screen. Also, my phone is not recognised on PC, making me suspect it's not really turned on. I also tried holding volume up + power for 40+ minutes by stuffing it between a few books when making dinner haha, and it still didn't respond. Would you move on in this situation?

speedrocket2110 said:
Thanks for replying My phone seems unresponsive, so I haven't managed to get in to download mode, at least not visually on the screen. Also, my phone is not recognised on PC, making me suspect it's not really turned on. I also tried holding volume up + power for 40+ minutes by stuffing it between a few books when making dinner haha, and it still didn't respond. Would you move on in this situations
Click to expand...
Click to collapse
I don't know because I'm not in that situation, but I had a similar one but only boot to download mode.