I have a big problem on my Moto G (2014), I am soft bricked and with 0% battery. I can get into fastboot mode and I'm able to flash TWRP and official roms. But they won't boot. After restarting to recovery or rom it will show the "warning bootloader unlocked" for a minute and then the "0% battery left" screen. After that it boot loops. I think it's because the battery is so low that it can't boot recovery or to official roms.
At this point I'm in fastboot mode and connected to my PC so it's charging but very slowly and often times it exits fastboot mode on its own and tries to boot, how do I prevent that so I could leave it charging for overnight? Or any other suggestions?
Thanks in advance!
Try putting it in the bootloader menu by pressing vol down and power and don't use PC to charge its very slow in these situations and quite inadequate ,plz use a proper phone charger with higher miliamp ratings and it should charge up and let you boot properly. And if it still does not boot then the battery might be gone , have patience while charging it takes a long time to recover from this situation.if all fails then you might try to reconnect the battery header on the phone motherboard but that requires the phone to be disassembled ,check out YouTube for the instruction vids....hope it helps
Try offline charging.
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My phone (which is currently running Incubus26Jc's Android 2.2 FroYo RLS10 NAND) rebooted at around 12:30 AM. I noticed that it reboots, randomly, about twice a day. Not sure of the cause, haven't looked in to it, but normally it comes back to the desktop, like a fresh boot of the phone. So I thought nothing of it.
Last night, however, during the reboot, SOMETHING happened, and it seemed to have gotten stuck in an infinite loop. It would show the boot animation for a while, then lose power... then it would notice the power cable was plugged in, and try to automatically boot up.
If you notice, plugging the power cable in forces the phone to boot all the way into the Android OS. There seems to be no "charge while off" feature, at least for me.
Anyway, this endless loop caused the phone to reboot over and over and over, until the point where the battery was so far drained, that this "hand off" between the boot screen and the actual OS (somewhere during the boot animation) where the phone had to run on battery for a split second, was long enough to cause the phone to power off completely.
I couldn't flash back to Windows (I thought) because the phone didn't have enough of a charge to stay in bootloader mode while flashing the phone. Which was mostly true.
FYI (how I fixed my problem): should something similar happen to you, put the phone in true BOOTLOADER mode (hold the camera button when you press the power button, see the colored bars across the screen), even though the indicator doesn't light up, the phone DOES charge when in this mode and plugged in to a wall charger (and probably while plugged in to USB).
As far as I know, you are required to maintain a certain level of charge to run the RUU because the USB cable cannot charge the phone WHILE FLASHING, but while waiting in bootloader mode, the battery will charge. I was able to let the phone sit at the bootloader for about an hour then started up my phone and had over 70% charge according to Android. Working again!
thank for the 411. i had a similar issue with rls10. went to 10.5 and rls11 and flashed a new kernel, no further issue since
Hi there,
I have unlocked my XZ before. Yesterday I seemed to flash a wrong kernel, and after that my XZ cannot work any more.
At first I tried to press the power button and it gave me no response, so did I do the hard reset(power button + volume up for seconds). Then I kept it charging on the wall to see what gonna happen, about 8 hrs passed and nothing special came out so I pull it out of the power. After a while when I press the power button again the power led blinked for three times just as the phone got too low battery to boot, then I charged it again, but the power led went off after several minutes. I tried to get it into flash mode or fastboot mode but I got no luck.(if I could get it into those modes I know how to recover it)
I saw the thread http://forum.xda-developers.com/showthread.php?t=1849170 and it talks about charging cycle like this:
On a working phone there are different stages of a battery's charging cycle. The stages are listed in order they happen. The cycle goes from a completely dead battery through a phone running on battery and back to a completely dead battery.
1.Dead battery. No response from the power button, no screen and no led.
2.Connect to charger
3.low battery level charging mode. This is when just the RED led is on and no screen. At this stage the battery's charge is to low to turn the phone on, but it is charging.
4.Kernel controlled off-line charging mode. This is when the battery has charged enough from step (3) and boots the kernel to charge the battery. The phone is off, but could be turned on using the power button. A quick press of the power button will show this battery icon. Icon will fill with charge.The kernel also controls charging when the phone is on.
5.Battery is fully charged.
6.Unplug the phone and turn on.
7.Battery is dead from normal use.
8.Repeat stages starting at (1)
The kernel of my phone got bricked so I think my phone can be charged on the step 3 but when the power is enough to power on it tries to get onto step 4, and then it fails to be in the offline charging mode, at same time the power led goes off, as it was totally dead. I think if I could get my phone into flash mode before it tries to be on step 4 it can be recovered but after several tries I still couldn't do it.
Any suggestions? Thanks.
If I were you I would try harder to get into fastboot and flash a kernel with recovery.
Still, whenever you have troubles on an Unlocked device, resort the official flashtool.
Emma Flashtool
how do you flash a wrong kernel? there is only one Dev kernel.
G1_enthusiast said:
how do you flash a wrong kernel? there is only one Dev kernel.
Click to expand...
Click to collapse
Probably flashed the 4.2.2 version on 4.1.2 or the other way round.
kailiu said:
Hi there,
I have unlocked my XZ before. Yesterday I seemed to flash a wrong kernel, and after that my XZ cannot work any more.
At first I tried to press the power button and it gave me no response, so did I do the hard reset(power button + volume up for seconds). Then I kept it charging on the wall to see what gonna happen, about 8 hrs passed and nothing special came out so I pull it out of the power. After a while when I press the power button again the power led blinked for three times just as the phone got too low battery to boot, then I charged it again, but the power led went off after several minutes. I tried to get it into flash mode or fastboot mode but I got no luck.(if I could get it into those modes I know how to recover it)
I saw the thread http://forum.xda-developers.com/showthread.php?t=1849170 and it talks about charging cycle like this:
On a working phone there are different stages of a battery's charging cycle. The stages are listed in order they happen. The cycle goes from a completely dead battery through a phone running on battery and back to a completely dead battery.
1.Dead battery. No response from the power button, no screen and no led.
2.Connect to charger
3.low battery level charging mode. This is when just the RED led is on and no screen. At this stage the battery's charge is to low to turn the phone on, but it is charging.
4.Kernel controlled off-line charging mode. This is when the battery has charged enough from step (3) and boots the kernel to charge the battery. The phone is off, but could be turned on using the power button. A quick press of the power button will show this battery icon. Icon will fill with charge.The kernel also controls charging when the phone is on.
5.Battery is fully charged.
6.Unplug the phone and turn on.
7.Battery is dead from normal use.
8.Repeat stages starting at (1)
The kernel of my phone got bricked so I think my phone can be charged on the step 3 but when the power is enough to power on it tries to get onto step 4, and then it fails to be in the offline charging mode, at same time the power led goes off, as it was totally dead. I think if I could get my phone into flash mode before it tries to be on step 4 it can be recovered but after several tries I still couldn't do it.
Any suggestions? Thanks.
Click to expand...
Click to collapse
fastboot and flash mode are at the lower levels and should not be affected by what Kernel you flash.
And since these modes do not use your screen, they don't really need a minimum battery level, although it wouldn't be safe to flash at low battery level.
What you can do is, power off your phone and disconnect from the wall charger.
Connect your phone to the PC while holding Volume Up.
This should put your phone in fastboot mode.
Let it stay this way for a couple of hours, you should be able to get some power in the battery.
Get the right kernel for your device's current firmware from here.
DooMLoRD said:
4.2.2
.423 - v9
4.1.2
.307 - v8
.253 - v7
.434 - v3, v4, v5, v6
.350 - v1, v2
Click to expand...
Click to collapse
Install the kernel via fastboot
DooMLoRD said:
download the kernel package update.zip
save it on c:\ and extract the boot.img from the package
save the boot.img to the folder containing fastboot binary
flash the boot.img using fastboot:
Code:
fastboot flash boot boot.img
reboot from fastboot
Code:
fastboot reboot
the device should now start booting, enjoy the kernel
Click to expand...
Click to collapse
If you are unable to follow these instructions or you have any doubts, feel free to ask I'll do my best to explain.
Thanks to all the fellows who helped me before. The most serious problem was I couldn't even get my phone into fastboot mode or flashmode.
Finally I sent my phone to the customer service. Luckily enough they didn't check whether its bootloader is unlocked or not and returned it back to the factory. Still waiting for what's gonna happen.
Hello, I can't boot my device anymore. When I press the power button nothing happens. After I removed the battery for 5 minutes I can start it and it shows the battery loading screen with 0% for a few seconds and flickers. Also I've tried a new battery but it didn't work. I've used CyanogenMod on the device and everything worked well.
i'd appreciate a lot if someone could help me!
Regards
The other battery easy fully charged and the phone didn't turn on?
Even with no battery you should be able to enter download mode when connected to a computer using an USB cable. If you can't then I'm afraid you have a hardware issue.
When I try to boot in download mode it only shows this: i.imgur. com/2YgNFFq.jpg
Hard brick... Maybe hardware issue.
If it's not a D415, you can try the unbrick hardbrick tutorial from another thread in this forum. You will have to disassemble the phone.
I have experience a bootloop in redmi 4
Its starts when my battery reaches 0% when i connected to a charging the led indicator is blinking and after 5 minutes the phone power on with vibration and shows mi logo and turns off and the process repeats continuous when i connect the charger it repeats till my battery is over
Tried various switch to open recovery or fastboot nothing working
Please help me i dont know problem of my phone any possible fix for this
Try charging your phone from computer USB port when in fastboot mode. This will prevent it from turning off..after say half an hour after your battery is somewhat charged try switching to normal charger and check if problem still persists.
ArK96 said:
Try charging your phone from computer USB port when in fastboot mode. This will prevent it from turning off..after say half an hour after your battery is somewhat charged try switching to normal charger and check if problem still persists.
Click to expand...
Click to collapse
When i access fastboot mode it opens for about 3 and the phone restart
Press Power & Vol+ & Vol- , after a vibration.. Leave it. Same for Fastboot mode. Maybe you're holding it for indefinite time
I bought bricked droid 4 thinking i could fix it but apparently not.
Event after flashing the stock firmware (using fastboot), the phone still wont boot.
Some more information:
- Phone doesn't have a battery (or more specifically battery wont charge, dead probably, i disconnected it)
- I create a factory cable (bridge pin 1 and 4) and managed to enter fastboot mode
- When phone is connected to usb (without any buttons pressed), it shows a motorola logo for a few seconds, then the screen turns off, then the screen turns on again (this time only black no logo) and then reboots again.
- Same thing happens event when i try to enter recovery mode
So i have concluded:
1. It is not possible to boot the system with only factory cable, without battery (probably not the case)
2. There is some hardware issue (hopefully not)
If everything else fails i will try to charge the battery using external lithium charger circuit, see if maybe battery can be recovered, or if that fails buy another battery, see if it boots with a battery
I bought this phone to install linux and play around with it, if someone is wondering why would any sane person buy a broken 8 year old phone :laugh:
Any tips would be welcome
To answer my own question, device cannot be booted using only factory cable, it needs to have a battery.
With factory cable you can only enter fastboot mode, not even recovery
Charged the battery using external charger, and device booted