Develop Bugs

Phone won't stay off and charge, stuck in bootloop

Hi, I have no power left. how do I keep my phone off so that it can charge high enough so that I can begin to use fastboot again?
I've powered down from the fastboot menu but as soon as there is enough power, it boots into the boot loop again. I need this phone to stay OFF so that it will charge.
Btw, the modaco cyanogenmod9 caused this.
Thank you

answer: fastboot erase cache
this worked for me

unplug the charger, powerdown from fastboot, then plug the charger again, it works for me... just dont touch the power button..

[Q] Kindle Won't Turn on

So last night I was rooting a Kindle Fire 2. It's running 10.2.6. I was following a tutorial on this forum and I succeeded in rooting it. I flashed TWRP on it, but for some reason that didn't work. I tried booting to recovery and got a red triangle with an exclamation point inside it. It said it failed to boot. The device still worked at that point during the install. It was low on battery, though I had it plugged into my laptop. I was in fastboot and the device stopped receiving commands from it for some reason (I wasn't able to figure out why). Then the battery died. I guess a laptop usb port doesn't properly charge a tablet. But anyways, I plugged it into a wall charger for a couple hours and now it won't turn on. When I plugged it in, a charging light never came on. I used this same charger earlier in the evening and it charge the Kindle with no issues whatsoever, so I know it isn't the charger or cable failing to charge the device.
So here is where I stand:
When it died, it would still successfully boot
I was in fastboot when it died
Fastboot would not take commands from my laptop, whereas it had before I tried flashing TWRP (by that I mean when I try to send commands via the command line, it would simply say <waiting for device>)
The device is successfully rooted and bootloader unlocked
I've tried pulling the battery; I've tried holding the power button for 20 seconds, for 30 seconds and for short periods of time; I've tried any possible command from the computer. I haven't tried a factory cable because I don't have one. What do I do now?

Since you rooted and unlocked the boot loader... No warranty...so I guess try flash stock ROM...
Sent from my mighty Xperia Arc S

It won't turn on for me to do that in the first place, though.
Mods - I just realized that I posted this in the wrong forum. I apologize for that.

[Q] HTC not charging and booting up.

So, yesterday i was flashing first rom for my HOX and it seems it had less battery than 30% and it wasnt done flash rom completely and it is stuck in "HTC" screen and Bootloader says, that there are "Battery level is too low to flash" .... So what i can do now? How I can do to it does work?
How to charge it?
P.s. In Fastboot my computer is not recognize my phone and I cant go into recovery - because it boot in to it and automaticly reboot my device.
++++++ SOLVED - for solution read #8 POST ++++++

it's a well known problem, don't try to charge from usb cable. power off and plug it into the wall charger and leave it charging for about 3 hours or more

I can leave it on HTC screen?
I tries this -
Code:
@echo off
:start
fastboot getvar battery-voltage
fastboot reboot-bootloader
ping /n 6 localhost >nul
goto start
But still it not let me in into recovery ...

No, power off completely and plug into wall charger for at least 3 hours

How do i do that? After i power it off (I cant go further than HTC logo and in Bootloader it do the same) he switches off and then starts again and boot till HTC logo ...
P.s. I hold Power button - it turns off, conect to wall charger, red led indicator shows up (in front grill) and after ~5 sec it automaticly turns on.
P.s.s. It turns on only with charger in phone ... w/o charger it stays off.

red led is on, phone comes back on, does the led stay on on wall charger ?

Read my last reply here
http://forum.xda-developers.com/showthread.php?t=2341036

Yep it was on, but full brightness screen ate more energy than changer can give, so phone was discharging.
Problem was this -
Phone was not able to boot up ROM, because there was no energy to flash full rom, flashing failed - not fully flashed rom, so no system to operate;
Pc di not recognize my device, but somehow it still was able to flash from sdk;
When i tried to boot into recovery, it just blinked and rebooted phone.
So what i done -
Pluged my phone via usb to my pc;
Navigete to fastboot, it was showing fastboot USB;
Opened sdk -> platform tools folder, created txt file with code (below), renamed <name>.bat
Code:
@echo off
:start
fastboot getvar battery-voltage
fastboot reboot-bootloader
ping /n 6 localhost >nul
goto start
Runed my .bat file;
Script was runing and phone was turning on, then off, on, off ... etc, so the voltage went to 3680mV, somehow not further;
Closed my .bat file ...
Navigated to recovery, boot it, still NOTHING;
P.s. I was using that from General theard "All in one kit for HOX", but seems antivirus was deleted something and i flashed faulty recovery;
So I downloaded new one CRW;
Flashed it - "freeboot flash recovery <name_of_recovery>.img" form sdk tools...
So - it was booted into recovery,
Went to mound storage, but it was not alow me to mount it, some kind of error,
I flashed - TWRP - from rondom sorces;
There I was able to mount storage, put ROM in storage.
SO I Wiped and Format all what neceseary and get back to PC;
There I flashed boot.img via SDK fastboot tool;
Then from recovery i flashed my new ROM;
DONE! That was so hard, but only thing what was foult was recovery and my unclever mind to know it before - but as they say - "If you are not tryed it, you will never know how to do that" ...

[Q] HELP! I hard bricked my GNex!

Today I was going to update my CM10.2 20131127 to CM11 20131207. They are both official nightlies. I checked the md5 after downloading. So I booted into recovery, backuped, and did a full wipe. Then I tried to use adb sideload to flash the zips. This is the first time I used sideload. I followed all steps on the TeamWin website. After transfering the zip to the device, it started flashing. After a couple seconds, the color of the screen changed and dimmed slowly. I waited a while and then unplugged the device and the battery. Then the device is completely unrespondsive. No bootloader, no download mode, not even responding when I plugged it in. ADB and fastboot shows nothing. Can anyone help me?
P.S. I am using TWRP 2.6.3.2

doing a fastboot of the factory images do nothing? what about the battery? is it charged at least?
Good luck

Charging does nothing. I followed the steps for OMAPFlash. After that I am able to boot it sometimes. The screen will freeze and dim after booting into both android and bootloader. My computers won't recognize it when I boot into bootloader. So flashing is not possible.

So I reset it again using OMAPFlash. I will crash after a second or two. I plugged it in, ran the fastboot devices command before it crashed. Fastboot can recognize the serial number before it crashes. 12 ? or nothing after it crashed. Should I restore it to factory and lock it or just send it to some specialist?
P.S. When I charge it, it shows the battery with thunderbolt icon and crashes.

[Q] Arc s with no os and battery dead not booting

Hi guys, I'm here because I'm deseperate. My arc s won't boot if i press the power button or if I connect it to pc . It has no os because i format the system folder while I was trying to flash a rom, and the battery is surely dead. I cannot enter neither in fastboot nor in flashmode. Is there any way to charge the phone so that I can flash any firmware? Or should I buy another battery?

SilverSurfer(MrAllIn) said:
Hi guys, I'm here because I'm deseperate. My arc s won't boot if i press the power button or if I connect it to pc . It has no os because i format the system folder while I was trying to flash a rom, and the battery is surely dead. I cannot enter neither in fastboot nor in flashmode. Is there any way to charge the phone so that I can flash any firmware? Or should I buy another battery?
Click to expand...
Click to collapse
Keep it in charge even if the phone does not show anything, it will charge.
i had the same issue with Ray i erased the kernel and battery died i kept it in charge for 10min and it started in fastboot mode

ManthanRB said:
Keep it in charge even if the phone does not show anything, it will charge.
i had the same issue with Ray i erased the kernel and battery died i kept it in charge for 10min and it started in fastboot mode
Click to expand...
Click to collapse
Thanks for the reply, but I don't think it works., because i've plugged it for at least one day and still can't enter in recovery or do anything :crying: any tips?

SilverSurfer(MrAllIn) said:
Hi guys, I'm here because I'm deseperate. My arc s won't boot if i press the power button or if I connect it to pc . It has no os because i format the system folder while I was trying to flash a rom, and the battery is surely dead. I cannot enter neither in fastboot nor in flashmode. Is there any way to charge the phone so that I can flash any firmware? Or should I buy another battery?
Click to expand...
Click to collapse
It will go in Fast boot mode Just press Menu key(on my neo v its on right side of home button) and see if blue led turn on in your arc.
if your device still not entering on fastboot mode and you want to charge your mobile battery then find any compatible universal charger for your device

I guess by saying "universal charger" what fenix meant was a spare battery charger which, charges batteries while unattached from the phone itself... or he/she probably was referring to something else.
anyway, the spare battery charger that I know looks like this:
http://www.ebay.com.au/itm/BA750-Ba...Arc-XPERIA-Arc-LT15i-Xperia-X12-/170822357636
or you can just search through google for it using the keywords "spare battery charger LT15i anzu".
good luck!