Develop Bugs

Cant enter fastboot ＆ recovery mode！

Hello，everyone,i got a problem that i cant enter fastboot and recovery mode.
today ,i installed CM12 22/7 upgrade ,and before i install this ,i did a backup of build.prop because i have V4A and every time i upgrade CM i have to change this build,prop ,so i want make a copy and when i finish upgrade i can just move that file without do anything ,and everything goes well, i installed upgrade and installed V4A driver ,it says i need restart,so i restarted,but after LG logo ,screen turn black, cant enter system ! i thought maybe i flash CM one more time can repair this,so i press POWER and volume down,but,nothing happen ,after LG logo,and screen turn black,and i try to enter fastboot mode ,its the same ,when LG logo shows screen turn black.......
My phone is LG d855,and my English is bad,i hope you can understand
Can anybody help me?

did you try entering Download mode?

Phone stuck in bootloop, help please
wrong trhead

Are you sure you there is no fastboot and no download mode?
You can enter download mode by pressing and holding the “Volume Up” and connecting the USB cable from phone to PC
If it works then you Soft bricked it...And you can use this guide to fix it:
http://forum.xda-developers.com/showthread.php?t=2785089
.
.
.
BUT if that does not work then you Hard bricked the phone
I had that problem because of flashing with faulty win8 drivers...no download mode or fastboot, all i got was security warning and bootloop. The only way you can fix hardbrick is through JTag, but i don't know if you can fix it without paying someone money, because you need special hardware to do it. You can find people on ebay that can fix it but it will cost you 30-50$.
I sent mine to warranty...they didn't know what was wrong with it and couldn't fix it...and so they just replaced the motherboard. If you have a warranty then send it and do NOT!! tell them you flashed it or rooted it. Tell them you don't know what happened...The chances of them finding out is very small.
If ebay and/or warranty not work, then there was an article on the Internet to fix a hard brick but for some reason it is now password protected...i do not know why....You can send the owner an email so he can give you the password.
http://www.androidbrick.com/unbrick-recover-your-dead-lg-g3-g2-all-variants
...There is another article but it is in Portuguese
http://arena4g.com/forums/topic/tutorialunbrickhard-unbrickd855
But then again you cant be certain this will work either.
Conclusion: Fk LG...They don't want people upgrading their slow buggy software.

Alex_XV6700 said:
did you try entering Download mode?
Click to expand...
Click to collapse
i cant enter download mode,always turn black after LG logo

Disconnect cable from pc and phone
Press power + vol -
You will get first black screen, keep pressing until lg logo appears and it shuts off completely.
Then press just vol + and reconnect cable to computer.
That should leave you in download mode or fastboot.

Alex_XV6700 said:
Disconnect cable from pc and phone
Press power + vol -
You will get first black screen, keep pressing until lg logo appears and it shuts off completely.
Then press just vol + and reconnect cable to computer.
That should leave you in download mode or fastboot.
Click to expand...
Click to collapse
no,when i reconnect phone,and only press volume + ,its shows i am Charging then phone is off.......cant enter download mode,but i found when i press volume +and- , i can enter hardware key control mode,but there only have 3 choice,cancel , mode on and mode off,i have tried mode on and mode off,doesnt work.

rubisco1 said:
Are you sure you there is no fastboot and no download mode?
You can enter download mode by pressing and holding the “Volume Up” and connecting the USB cable from phone to PC
If it works then you Soft bricked it...And you can use this guide to fix it:
http://forum.xda-developers.com/showthread.php?t=2785089
.
.
.
BUT if that does not work then you Hard bricked the phone
I had that problem because of flashing with faulty win8 drivers...no download mode or fastboot, all i got was security warning and bootloop. The only way you can fix hardbrick is through JTag, but i don't know if you can fix it without paying someone money, because you need special hardware to do it. You can find people on ebay that can fix it but it will cost you 30-50$.
I sent mine to warranty...they didn't know what was wrong with it and couldn't fix it...and so they just replaced the motherboard. If you have a warranty then send it and do NOT!! tell them you flashed it or rooted it. Tell them you don't know what happened...The chances of them finding out is very small.
If ebay and/or warranty not work, then there was an article on the Internet to fix a hard brick but for some reason it is now password protected...i do not know why....You can send the owner an email so he can give you the password.
http://www.androidbrick.com/unbrick-recover-your-dead-lg-g3-g2-all-variants
...There is another article but it is in Portuguese
http://arena4g.com/forums/topic/tutorialunbrickhard-unbrickd855
But then again you cant be certain this will work either.
Conclusion: Fk LG...They don't want people upgrading their slow buggy software.
Click to expand...
Click to collapse
thx for your reply. i tried many times with different way,try to enter download mode or fastboot .......but failed.and now i decided buy Nexus 6

Zenfone 2 Bricked please help!

i was rooting my zenfone 2 ZE551ML , and during the process i accidentally restar my phone, and now i have the bootloader unlocked screen (white asus logo screen) and i cant enter to recovery now, noting happens, i try using this guide but the MOOREFIELD driver appear for only 1 second and the phone turn again to the bootloop. i don't now what i can do to fix my phone please i need help. ADB don't work because i cant enter to bootloader or something like that
:crying: :crying: :crying:
sorry for my bad english.

grandjulio said:
i was rooting my zenfone 2 ZE551ML , and during the process i accidentally restar my phone, and now i have the bootloader unlocked screen (white asus logo screen) and i cant enter to recovery now, noting happens, i try using this guide but the MOOREFIELD driver appear for only 1 second and the phone turn again to the bootloop. i don't now what i can do to fix my phone please i need help. ADB don't work because i cant enter to bootloader or something like that
:crying: :crying: :crying:
sorry for my bad english.
Click to expand...
Click to collapse
are you able to go to bootloader screen?

sukhwant717 said:
are you able to go to bootloader screen?
Click to expand...
Click to collapse
No, i cant only show White screen with asus logo, and I can not enter to bootloader, Simply when I press the power button and volume does not enter.

Hey,
I have the same problem, MOOREFIELD driver appear for only 1 second and the phone turn again to the bootloop. But i have access to the fastboot. I tried to flash a stock recovery but it doesn't change, it stuck to fastboot screen

Open xFSTK, press and hold the power button until the phone turns off, start download in xFSTK, connect to the computer. If the phone tries to power up, press and hold the power button down to force the phone to power off. It took me a few tries but I got xFSTK to bring up fastboot.

audit13 said:
Open xFSTK, press and hold the power button until the phone turns off, start download in xFSTK, connect to the computer. If the phone tries to power up, press and hold the power button down to force the phone to power off. It took me a few tries but I got xFSTK to bring up fastboot.
Click to expand...
Click to collapse
Zephyrell said:
Hey,
I have the same problem, MOOREFIELD driver appear for only 1 second and the phone turn again to the bootloop. But i have access to the fastboot. I tried to flash a stock recovery but it doesn't change, it stuck to fastboot screen
Click to expand...
Click to collapse
thanks for the reply but sukhwant717 help me to solve the problem, is just a mistake in the steps using xFSTK, i follow this guide https:// drive. google.com/file/d/0B2oMRhweQ4CHaFJnMEZ4NUg1YlU/view

Any way to unbrick without modifying the wire?

i am sorry but i have searched a lot but i couldn't unbrick my ZUK Z2, i flashed the Deodexed stock ROM and then the screen went all black with the LED glowing. If i press the power button i just see the ZUK logo and the screen goes black, i tried to boot it into fastboot but no luck. I somehow managed to get into the 9008 mode but while flashing with QFIL i get the sahara error saying unable to read header or something and with MiFlash i am getting "cannot read hello packet"
Any Help will be appreciated
EDIT:
The device has been fixed, i had to press the download button on the QFIL as soon as my phone boots into EDL mode.

did you flash through twrp? and if your bootloader if unlocked then you should have 5 sec bootloader placeholder from where u can reboot recovery . and if you are stuck into something different then it will be difficult to recover but possible. for sahara fail , play with settings in qfil like emmc, reset ,etc and try.And you can remove the port from device manager and retry if u r getting 9008 port.You should not get sahara fail. You will be get out of this easily just try things suggested. Your device is live as zuk logo is showing so dont worry.
And use latest qfil: http://www.androidbrick.com/download/download-latest-qualcomm-flasher-qfil-qpst-2-7-460/#
EDIT: Try this too-
Bootloader mode: shutdown state, press and hold the volume plus key + volume minus key, while the usb line connected to the computer until the release button.
Qualcomm QPST (9008 port) : shutdown state, press and hold the volume plus key, press the power button at the same time usb cable to connect the computer. This mode is a black screen state.
For recovery: press and hold the power key + the volume plus key + the volume down key until you release the release button.

Just buy DFC cable a.k.a Deep Flash Cable. The cable is same as you wire cable manualy

Kalp3sh S1NGH said:
i am sorry but i have searched a lot but i couldn't unbrick my ZUK Z2, i flashed the Deodexed stock ROM and then the screen went all black with the LED glowing. If i press the power button i just see the ZUK logo and the screen goes black, i tried to boot it into fastboot but no luck. I somehow managed to get into the 9008 mode but while flashing with QFIL i get the sahara error saying unable to read header or something and with MiFlash i am getting "cannot read hello packet"
Any Help will be appreciated
Click to expand...
Click to collapse
Onces that you are in 9008 mode you need to use ADB
"Adb reboot edl"
You are a lucky guy, i needed to conect grenn and black cable of the smartphone to put in 9008 mode

ozi87 said:
Onces that you are in 9008 mode you need to use ADB
"Adb reboot edl"
You are a lucky guy, i needed to conect grenn and black cable of the smartphone to put in 9008 mode
Click to expand...
Click to collapse
So i plug my phone in 9008 mode and go straight to adb?

Kalp3sh S1NGH said:
So i plug my phone in 9008 mode and go straight to adb?
Click to expand...
Click to collapse
Have you both any idea about adb! Edl is itself 9008 mode also called download mode. Adb is debug bridge and it is used in OS to control it by this bridge from PC.

pixel0 said:
Have you both any idea about adb! Edl is itself 9008 mode also called download mode. Adb is debug bridge and it is used in OS to control it by this bridge from PC.
Click to expand...
Click to collapse
yes exactly, that's why i asked.

pixel0 said:
did you flash through twrp? and if your bootloader if unlocked then you should have 5 sec bootloader placeholder from where u can reboot recovery . and if you are stuck into something different then it will be difficult to recover but possible. for sahara fail , play with settings in qfil like emmc, reset ,etc and try.And you can remove the port from device manager and retry if u r getting 9008 port.You should not get sahara fail. You will be get out of this easily just try things suggested. Your device is live as zuk logo is showing so dont worry.
And use latest qfil: http://www.androidbrick.com/download/download-latest-qualcomm-flasher-qfil-qpst-2-7-460/#
EDIT: Try this too-
Bootloader mode: shutdown state, press and hold the volume plus key + volume minus key, while the usb line connected to the computer until the release button.
Qualcomm QPST (9008 port) : shutdown state, press and hold the volume plus key, press the power button at the same time usb cable to connect the computer. This mode is a black screen state.
For recovery: press and hold the power key + the volume plus key + the volume down key until you release the release button.
Click to expand...
Click to collapse
I think the bootloader is locked again, i can't boot into recovery. I tried the latest QPST and still getting unable to read packet header read 0 bytes error and Sahara Failed.

Kalp3sh S1NGH said:
I think the bootloader is locked again, i can't boot into recovery. I tried the latest QPST and still getting unable to read packet header read 0 bytes error and Sahara Failed.
Click to expand...
Click to collapse
If bootloader is locked or unlocked , 9008 mode will work for sure. Also Use buttons combination to enter fastboot if u can then unlock and flash recovery from there .

To avoid this problem again, when you flash stock roms after using Custom Roms, make sure you format the System, data and cache partitions back to EXT4 format, since Stock firmware (even the moded ones) DOES NOT support any other System/Data/ Cache format.
After loading the bootloader, the phone will end with black screen and white led on. You just need to reboot on recovery again and advance format System/ Data/ Cache back to EXT4, connect the phone to the PC again, transfer the ROM file to the internal storage and make the Flash again...
Hope this help you

LG G8 STUCK IN Qualcomm HS-USM QDLoader 9008

Today I Bricked My LG820Qm
I was updating my Lg g8 using LG UP, When the Process on 64% my PC power off
After that my phone stuck in Qualcomm HS-USM QDLoader 9008
Any solution to come out from this mode to Downloaded Mode so that i can update using LG up.
I was updating G820QM10i_00_NAO_US_OP_0401 to G820QM20b_00_NAO_US_OP_1224
My LG up LGUP_Lab_Frame_Ver_1_16_0_3

Can you try to switch to download mode by press&hold VOL+ while inserting the USB cable (connected to PC). Phone needs to be off while doing so.

tron1 said:
Can you try to switch to download mode by press&hold VOL+ while inserting the USB cable (connected to PC). Phone needs to be off while doing so.
Click to expand...
Click to collapse
I tried not working
If i press&hold VOL+ while inserting the USB cable still my phone come with Qualcomm HS-USB Mode
thanks for your reply

What happens if you press&hold VOL- (furing the whole procedure) push the power button until the phone vibrates, release the button und press&hold the power button?

tron1 said:
What happens if you press&hold VOL- (furing the whole procedure) push the power button until the phone vibrates, release the button und press&hold the power button?
Click to expand...
Click to collapse
Which ever combination, Vol- + power phone power of
with in sec it boot to Qualcomm mode

I don't know where to ask so I'm gonna try here. My G820N is stuck on Android 10 beta. Whenever I flash an official kdz, it only allows for emergency calls. Can't do anything. Any help would be appreciated

Following, in right here with ya.

atsuisofu said:
Following, in right here with ya.
Click to expand...
Click to collapse
Try entering download mode with phone disconnected from USB cable.
Also try to see if it gets recognized by LG-UP or by LG Bridge. These 2 softwares don't need download mode to be able to flash, just the phone to be recognized on some PORT.
Try also factory reset hard menu. Also try switching between Slot A and Slot B. There is also this backup method. Phone is not dead on one of those slots.
If nothing works (but slot a slot b should 100% work) , wait for the firehose, it's just around the corner. That will restore the phone back 100%.
For more info search v50thinq on telegram app. :good:

I can t get to download as it freezes and without the USB cable it doesn't even try and enter. I appreciate the recommendations. I was thinking of the a/b seit hbut without the use of fastboot I am at a loss of how to switch between the two as I thought the system chose and the switch happened upon rebooting once a system had been selected ie as in turning the unit off after loading the os set a flag to go to the opposite system upon completing the inftframs and boot sequence.

vikramanananda said:
Which ever combination, Vol- + power phone power of
with in sec it boot to Qualcomm mode
Click to expand...
Click to collapse
Hi, i'm facing the same problem today, my QM will not go into any mode other than the Qualcomm mode. Were you able to recover your phone finally ?

vikramanananda said:
Which ever combination, Vol- + power phone power of
with in sec it boot to Qualcomm mode
Click to expand...
Click to collapse
did you ever get it fixed. im having the same problem.

johnnycm77 said:
did you ever get it fixed. im having the same problem.
Click to expand...
Click to collapse
me too, do you fix it?

vikramanananda said:
Today I Bricked My LG820Qm
I was updating my Lg g8 using LG UP, When the Process on 64% my PC power off
After that my phone stuck in Qualcomm HS-USM QDLoader 9008
Any solution to come out from this mode to Downloaded Mode so that i can update using LG up.
I was updating G820QM10i_00_NAO_US_OP_0401 to G820QM20b_00_NAO_US_OP_1224
My LG up LGUP_Lab_Frame_Ver_1_16_0_3
Click to expand...
Click to collapse
So, if the device, as you say, lost power during an update like that, then almost assuredly you have at least one, if not numerous corrupted partitions.
And, it's specific partitions on the device that allow it to enter download mode. One of these most know about or have heard of is the laf partition. But other have to be there also for it to work, I don't remember exactly what the others off the top of my head, but that info is easily found.
The key thing you need (or any others commenting same prob), is to be able to enter EDL mode and have qfil installed and recognizing the device. If you can get that far, it would be easy to find the correct partitions you could flash with qfil and then immediately go from qfil to download mode.
Many many people have done this. Just get qfil set up (see guides section) and get the device recognized. that takes some effort but it's def doable.

Question phone has bricked itself without seeing a solution

I do not know in depth about all this stuff, I've just been thrown into it because my phone decided to brick itself in a system update after it got into my hands. I updated it and it went into crash dump, a few times, the just nonstop boot looped with the oneplus logo on, and some pixels bugging, then it stopped showing the oneplus logo all together and just boot loops, I can go into fast boot and nothing else, if I restart bootloader it now goes to a charge menu and rarely actually restarts fast boot, I just tried msm and I've tried booting into twrp but it wont work, i believe this is because the phone wont connect to my pc properly but i have tried universal adb drivers, new sdk, and official QUALCOMM ones to all get the same result of appearing in device manager as just andrioud and nothing else with no options for drivers, on msm it would show up but it wouldn't get past waiting for device. also i cant find a proper twrp rom for the 9 pro on here, atleast the stock one, nor can i find it anywhere else, i can only find the img. also i feel I'm missing something with flashing on the fastboot and am not seeing if I'm supposed to be doing something (of the limited things i can do) on the phone, or its all in commands and stuff on here. sorry this is horribly written, I'm tired and stressed because of this.

Search stock rom and download
unzip rom ,connect your phone in download mode and flash STOCK ROM.

DaNyaWa said:
Search stock rom and download
unzip rom ,connect your phone in download mode and flash STOCK ROM.
Click to expand...
Click to collapse
what is download mode

Shaggers said:
I do not know in depth about all this stuff, I've just been thrown into it because my phone decided to brick itself in a system update after it got into my hands. I updated it and it went into crash dump, a few times, the just nonstop boot looped with the oneplus logo on, and some pixels bugging, then it stopped showing the oneplus logo all together and just boot loops, I can go into fast boot and nothing else, if I restart bootloader it now goes to a charge menu and rarely actually restarts fast boot, I just tried msm and I've tried booting into twrp but it wont work, i believe this is because the phone wont connect to my pc properly but i have tried universal adb drivers, new sdk, and official QUALCOMM ones to all get the same result of appearing in device manager as just andrioud and nothing else with no options for drivers, on msm it would show up but it wouldn't get past waiting for device. also i cant find a proper twrp rom for the 9 pro on here, atleast the stock one, nor can i find it anywhere else, i can only find the img. also i feel I'm missing something with flashing on the fastboot and am not seeing if I'm supposed to be doing something (of the limited things i can do) on the phone, or its all in commands and stuff on here. sorry this is horribly written, I'm tired and stressed because of this.
Click to expand...
Click to collapse
I suggest to try the MSM tool again.
MSM tool for OP9pro you can find here : MSM tool OP9pro
More guides how to use it find here : MSM guide

Shaggers said:
what is download mode
Click to expand...
Click to collapse
You shod download "EDL" tool (even called MSN)
unzip and exetute ad admin (read specifications and troubleshooting in the related thread)
ensure tour phone is off
press and keep both volume buttons while connecting it to PC
then the COM X connection should become "green + connected"
go with "start" and just wait the processo to end

Shaggers said:
what is download mode
Click to expand...
Click to collapse
Volume up+power

DaNyaWa said:
Volume up+power
Click to expand...
Click to collapse
Download mode is not vol up + power, that's bootloader
EDL (Download mode) is both vol buttons + power
It should show up in the device manager on the computer as a Qualcomm device if it's worked correctly.

djsubterrain said:
Download mode is not vol up + power, that's bootloader
EDL (Download mode) is both vol buttons + power
It should show up in the device manager on the computer as a Qualcomm device if it's worked correctly.
Click to expand...
Click to collapse
EDL mode is NOT both Volume buttons + Power, it's just HOLDING BOTH THE VOLUME BUTTONS and WHILE HOLDING THE VOLUME BUTTONS, CONNECT THE USB CABLE. The phone needs to be in a switched OFF state before doing this.
By holding both volume buttons and the power button, you will force restart your phone into bootloader mode (fastboot mode).
And VOLUME UP + POWER BUTTON is recovery mode.

djsubterrain said:
Download mode is not vol up + power, that's bootloader
EDL (Download mode) is both vol buttons + power
It should show up in the device manager on the computer as a Qualcomm device if it's worked correctly.
Click to expand...
Click to collapse
Sory ok
Powerup+powerdown

DaNyaWa said:
Sory ok
Powerup+powerdown
Click to expand...
Click to collapse
Power up + power down?