Develop Bugs

[Q] firefirefire bootloop problem can you help?

I have a Kindle Fire that I have successfully rooted and using CM7.
I let the battery completely discharge and since then the device has been stuck in what appears to be a boot loop at the fire fire screen (I have a video of the problem but because this is my first post I am not able to post links, you could find it by going to graham dot doel dot org forwardslash kindlefire)
It won't turn on unless a usb cable is plugged in. When the usb cable is plugged in the apparent loop starts.
This is what I have tried:
1. trying to charge the device.
2. trying a hard reboot. Holding the power button for 20 seconds, doesn't make any difference.
3. connecting via adb, the device isn't seen.
4. Making a factory cable and trying to connect via that, but no joy there, the device isn't detected by the computer (windows or linux)
Could anyone make any suggestions about how to unbrick this device, I have searched high and low and have found nothing that helps or works.
Thank you

the repeatent on/off is typical - what happens:
kf tries to start - battery breaks down - kf tries to start - battery ...
the only solution i know is to charge with the wall charger for some hours (over night)
but if you plug it to the wallcharger it turns on
so press and hold the power button till it turns off to allow the kf to charge

Thanks. Pressing the power button seems to have no effect what so ever. Do you have any other suggestions?

i meant to hold the button till it turns off -> ~30sec
that it is off when on the wall charger
don't know an other solution - worked for a lot of others

I have tried this. the power button doesn't respond. plugged in or not.

Hello !
Same problem for me ... I let the battery completely discharge and since then the device has been stuck in what appears to be a boot loop at the fire fire screen... I plugged it (in the wall) pressing and holding the power button till it turns off to allow the kf to charge but there nothing ie no orange/green light... Do you have an idea?

Same problem here...
Here is my thread http://forum.xda-developers.com/showthread.php?p=22685015

Since it is quite obvious to me the device will never work again due to this POS battery, does any one want to buy it for parts? Or can Amazon repair it, even though its rooted with a custom ROM and recovery?

I have found a solution!
The problem was a power problem. I tired a different more powerful charger and It gave me enough power to turn the unit off and let it charge up.
Hope that works for others.

just for information:
the original charger is 1.8A - you should use one with nearly this power
i use a 1A and it's working fine - nevertheless i think that is the minimum
please mark the subject of the topic (edit first post) with [Solved]

b63 said:
just for information:
the original charger is 1.8A - you should use one with nearly this power
i use a 1A and it's working fine - nevertheless i think that is the minimum
please mark the subject of the topic (edit first post) with [Solved]
Click to expand...
Click to collapse
Just wanted to indicate my experience:
1.0A Charger = Boot Loop
1.3A Charger = Booted!
Yay!

have a headache from reading ... and re-reading...
Nestor94 said:
Hello !
Same problem for me ... I let the battery completely discharge and since then the device has been stuck in what appears to be a boot loop at the fire fire screen... I plugged it (in the wall) pressing and holding the power button till it turns off to allow the kf to charge but there nothing ie no orange/green light... Do you have an idea?
Click to expand...
Click to collapse
I have this exact same problem on my stock KF. Powers on with wall charger plugged in (no light green or red), immediately shuts down when unplugged. Been through all of the forums guides KFFB and the linked ones by Kinfauns I purchased a factory cable attempting to make it fast boot on computer, no power at all. Doesn't appear to have any effect
b63 said:
the repeatent on/off is typical - what happens:
kf tries to start - battery breaks down - kf tries to start - battery ...
the only solution i know is to charge with the wall charger for some hours (over night)
but if you plug it to the wallcharger it turns on
so press and hold the power button till it turns off to allow the kf to charge
Click to expand...
Click to collapse
I am at my wits end . Is there some type of battery failure that would account for being on charger for hours and not keeping the charge? or since it does boot up would it still be the software not in fastboot to allow a charge??? I plug in the wall charger, press button until it shuts off, and left it for several hours ( one last time going to try longer than overnight)

LG-G3 BRICKED AFTER WiFi HOT-SPOT USE ?!

Hello, XDA, Good morning.
So i was using an LG G3 D850 as an access point for a hot spot while my internet was down for a bit, So i connected my PC to my phones WiFi Hot-spot right? K.
Now I had the phone running like this for quite some time, 2-4 hours roughly. During this time I must have used about 4-5 gigs of data on my phone (don't care about the data use :laugh: ) and nearing the end of my abuse on the phones internet use I noticed that the screen doesn't want to turn on, but the phone is still on AND routing the access point still.
Fine fine, so When i decided to wrap it up and shut er' down, i powered the phone off. Attempt to reboot the phone was laggy at best and lucky to actually reboot the phone a couple times in this state. I powered down after failing to boot up a few times pulled the battery then plugged USB in and I Got the normal screen that you would get (can't remember what it looked like) if you plugged into the USB w/o a battery in. Then after the standard battery failed to operate correctly I stupidly tried a different battery, which was 2,600 MAH / 3.8 V Li-ion battery / 9.88 Wh SAMSUNG battery, I know.... stupid.... ( LG battery : 3,000mAh / 3.8v Li-ion battery / 11.4Wh
Now after All this battery sh*t, the phone did boot up once or twice with the above battery, but that was it. Now when I plug USB into phone w/o the battery in I get the triangle with a question mark and a picture of a cell phone and USB cable going into it. Thats the only screen that shows up, except for the green/red/blue blinking notification light at the top left corner! PHONE IS RECOGNIZED in DEVICE MANAGER and ONLY when I power down , cable in PC , hold volume + , insert cable , hold Volume + for about 5-8 seconds til I hear computer sound beep then I let go and I get LGE Android MTP device , LGE Mobile USB Composite Device and LGE Mobile USB Serial Port So i have some connectivity but no screen display unless , plugged in w/o battery. I have tried flashing kdz file for sh*ts and giggles to see if it would do the trick but still the same.
Wheres the veterans at ! Thanks in advance , Cheers!

Forgot to mention , that, Even right now the phone is plugged in blank screen still but being charged and will blink twice every minute or more, green notification light , top left. ***
Actually it blinks automatically or if i press the power button it will blink twice as well. . . What does this mean?!

Is download mode working?

eXpel said:
Hello, XDA, Good morning.
So i was using an LG G3 D850 as an access point for a hot spot while my internet was down for a bit, So i connected my PC to my phones WiFi Hot-spot right? K.
Now I had the phone running like this for quite some time, 2-4 hours roughly. During this time I must have used about 4-5 gigs of data on my phone (don't care about the data use :laugh: ) and nearing the end of my abuse on the phones internet use I noticed that the screen doesn't want to turn on, but the phone is still on AND routing the access point still.
Fine fine, so When i decided to wrap it up and shut er' down, i powered the phone off. Attempt to reboot the phone was laggy at best and lucky to actually reboot the phone a couple times in this state. I powered down after failing to boot up a few times pulled the battery then plugged USB in and I Got the normal screen that you would get (can't remember what it looked like) if you plugged into the USB w/o a battery in. Then after the standard battery failed to operate correctly I stupidly tried a different battery, which was 2,600 MAH / 3.8 V Li-ion battery / 9.88 Wh SAMSUNG battery, I know.... stupid.... ( LG battery : 3,000mAh / 3.8v Li-ion battery / 11.4Wh
Now after All this battery sh*t, the phone did boot up once or twice with the above battery, but that was it. Now when I plug USB into phone w/o the battery in I get the triangle with a question mark and a picture of a cell phone and USB cable going into it. Thats the only screen that shows up, except for the green/red/blue blinking notification light at the top left corner! PHONE IS RECOGNIZED in DEVICE MANAGER and ONLY when I power down , cable in PC , hold volume + , insert cable , hold Volume + for about 5-8 seconds til I hear computer sound beep then I let go and I get LGE Android MTP device , LGE Mobile USB Composite Device and LGE Mobile USB Serial Port So i have some connectivity but no screen display unless , plugged in w/o battery. I have tried flashing kdz file for sh*ts and giggles to see if it would do the trick but still the same.
Wheres the veterans at ! Thanks in advance , Cheers!
Click to expand...
Click to collapse
the good news the phone isn't bricked and it can't be unless harware failure, you will need to use the button combo to get into download mode and flash a kdz their are enough threads on how to so I won't write it again

v.konvict said:
Is download mode working?
Click to expand...
Click to collapse
I believe so, There is no display on the phone however, when its plugged into the computer I don't see anything in Device manager except I hear a sound on connection , then when I hit volume + and then insert the USB cable i get MTP driver, Com PORT driver, and CDC driver I believe.
suljo94 said:
the good news the phone isn't bricked and it can't be unless harware failure, you will need to use the button combo to get into download mode and flash a kdz their are enough threads on how to so I won't write it again
Click to expand...
Click to collapse
I have flashed a kdz already using LG flash tool 2014 method. But I will try the zip and dll method i guess. If there are other options i would love to know about them.
Refraining from having to short circuit the MOBO and wondering if this problem is as easy as getting a new battery and charger ?
Thanks, Wish i still had my jtag.... zzzzzzzzz

Power management problem or hard brick?

Hello guys, I'm having some problems with my Samsung S4 mini i9195. I was changing sd card to try to see a video shot with my Xiaomi Yi, since the phone boot I had some lag problems when suddenly it turned off. I'm not able to charge it, boot, go on recovery or download mode. When I plug it to my charger it vibrates, and battery logo shows up for a few seconds the it disappear and the screen goes black. When I plug it to my pc it says "unknown device" and try to download drivers, but I hear the usb device sound like the usb is connected and disconnected continuously. Today I tried my friends' battery(charged to 70% at least) and as soon as I plugged it the phone turns on and the samsung logo shows up, then suddenly shuts down. After this try, my friend pugged his battery in his phone and after booting battery was 0%, then he rebooted again and the correct percentage was shown. I was thinking it was something like a dead eMMC, but not anymore I believe it's a bad power management problem. What do you think? Can you guys say if this is a motherboard problem or only something related to the charging board?
Thanks a lot for your help.

[Help] Moto Z Play - Won't charge or turn on.

Hi guys, i hope i'm in the right place to ask it.
My Moto Z Play fell and won't charge or turn on anymore and i need your help xd.
Here is the information i've gathered.
- Sometimes, when i plug my cellphone to the turbo charger, it heats up, like it's charging, but doesn't display anything on the screen.
- If i hold the volume down and power button, sometimes, a white led blinks, but only once, not like everybody is mentioning that it keeps blinking.
- I plugged it into my computer, it recognized as Fastboot Addison S, then i downloaded some drivers mentioned in this forum and other forums, it recognized as Motorola ADB Interface.
- I've tried all USB Ports, 2.0 and 3.0, the cable is the original one and my windows is 10.
- RSDLite won't recognize my device, i'm using the lastest version, qflash executable won't regonize my phone either, it hangs on "waiting for device".
One of the weirdest things is that, when people text me over whatsapp, later, like hours later, the message gets double marked, like it's been "acked" AND I COULD EVEN CONNECT TO WHATSAPP WEB FOR LIKE, 30 SECONDS, then it disconnected and i couldn't do it anymore..
I've seen a dude on the internet saying that i should try to charge my moto z play with a charger with higher amperage, but it doesn't make a lot of sense to me. What do you guys think, do you guys have any suggestion?
I appreciate your help,
Arthur Passos.

I'd say it's worth a shot to try charging with the Moto Turbopower 30 but overall it sounds like something disconnected inside when you dropped it.

what model is yours? - -01, -02, or -03 ? Win10 may be a prob for you. I always keep a dual boot for win7 for that and old games.

Pixel XL - constantly defaulting to "USB supplying power to attached device"

Pixel XL - constantly defaulting to "USB supplying power to attached device"
No matter what I do, this phone constantly defaults to setting it to "USB supplying power to attached device" mode. I have never used this option so I'm unsure why the phone is doing this. I also need to adjust the settings when I try to charge it because it does not recognize that it is plugged in to a charger. After plugging in the phone to the charger, sometimes it will correct itself to "Charging" mode by switching it in the drop-down of the notification area and sometimes it will switch over after opening the Battery in settings. I have to play with the settings just to get it to charge every time and always have to have it plugged in first otherwise it will immediately default back to "USB supplying power to attached device" mode.
This phone was purchased used from someone who said they rooted the phone, but didn't install any images or roms. It currently is not rooted. And it is the Google Store version with the unlocked bootloader. Not sure if that info helps.
Can anyone tell me if this is a hardware or software issue and how to fix it?

Oddly enough after the last update I started having this problem with my radio.
I have a kenwood dnx694s. When I would plug my phone up for Android auto I would instead get the message you are getting."supplying power to attached device".
I simultaneously installed ex kernel and bought a new type c cable so I cant tell you which one fixed it. But the problem did not occur after that.
Only problem I'm having now is my charging port is going to hell. Cables don't stay in, and while trying to use my phone while charging it quickly changes between charging and discharging.