Develop Bugs

[Q] Stuck logo LG and can not hard reset ?

hi all.
My LG optimus G F180S Korea version can't start, it get stuck at logo LG. I have already read about this error: "stuck at logo LG", the aswear is use hard reset, but I can not hard reset my phone by press Down volume and Power button
Can anyone help me solve problem?
thanks in advance!

Make sure your phone is turn off. If u not sure, press Power about 10s. After, Pressing Volume - and Power. Goodluck.

phamluong92 said:
Make sure your phone is turn off. If u not sure, press Power about 10s. After, Pressing Volume - and Power. Goodluck.
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unluckily, I can not hard reset by pressing volume down and power
DO U have another method?
thanks!

for hard reset on stock cwm : turn phone off. press vol up + vol down + power.

I had the same problem. I even got worse and the phone wouldn't even turn on. So what worked for me is this:
I put the phone in download mode (Vol Up + Vol Down and then plug the usb)
After that I open LG Mobile Support tool. http://csmg.lgmobile.com:9002/client/app/B2CAppSetup.exe
Wait for the program to detect the phone then go to Options-> Upgrade Recovery. Wait for the process to finish.
After it finished the phone loaded normally and everything was intact. All my files and apps were untouched.

LG D858HK unable to get into download mode suddenly(not brick)

I wanted to flash the 20e kdz to my phone as 30a sucks. So I tried to boot my phone into download mode by pressing the vol + and plug it into the PC but it didn't work, I displayed the LG boot screen and show me the battery status. I am sure that the buttons on my phone is working well and it's not my first time to flash it. Can someone help me with this?

minesweeper2 said:
... by pressing the vol - and plug it into the PC ...
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Click to collapse
Don't you need to press the Vol+ button and not Vol- button before you plug it into the PC?

rk2612 said:
Don't you need to press the Vol+ button and not Vol- button before you plug it into the PC?
Click to expand...
Click to collapse
whoops, i mean vol +

LG G3 Kernel Panic?

What can I do to revive my cellphone?
It's an LG G3 D855p
-----------------------------------------------------------------------------------------------------------------
DemiGod Crash Handler : Kernel Crash! :
Press key to choose Dload Mode/Reboot
1)Volume Up: Dload Mode.
2) Volume Down: Reboot.
If you choose Dload Mode,
Please do following action.
1)Dload Mode. Please connect USB
2) Get the ram dump image using QCT's Memory Debug App
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000000b
------------------------------------------------------------------------------------------------------------
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Click to collapse

Press voldown button for a second and it should reboot.
When did this start happening and your software version, if possible?

myclarity said:
Press voldown button for a second and it should reboot.
When did this start happening and your software version, if possible?
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It cannot enter download mode, recovery mode or boot into system. The only screen is this. Even if I try to press the buttons.
It started when I was trying to flash via box.
I think that maybe my EMMC gone bad.
It was in the v30f version.

VS986 doesn't have download mode

Hi guys
my LG VS986 doesn't have Download mode Or recovery.. (there is no laf partition) but it has System Recovery list and fastboot mode.
The system is stuck at the second LG logo.
I have tried with fastboot mode but it has failed to write any thing like (laf.img) Or (System.img) maybe the bootloader is locked (I am not sure).
USB debugging is not enabled although I have chosen it from SESTEM RECOVERY list so ADB does not work too.
We all know that the boot loader is locked for this model until now.
Is there one has a solution to how can i download a new firmware or fix it !!?

Are you following these procedures:
LG G4 Download Mode
1. Download and Install LG’s USB Drivers
2. Plug the USB Cable into your PC(not connected to the LG G4)
3. Have your PC Powered On and Logged in
4. Power Down the LG G4
5. Press and Hold the Volume Up Button on the LG G4
6. While Holding Volume Up, Plug the USB Cable into the LG G4
7. Continue Holding the Volume Up Button After You See ‘Download Mode’
8. Let Go of the Volume Up Button When You See the ‘Firmware Update’ Screen on the LG G4

Spookymyo said:
Are you following these procedures:
LG G4 Download Mode
1. Download and Install LG’s USB Drivers
2. Plug the USB Cable into your PC(not connected to the LG G4)
3. Have your PC Powered On and Logged in
4. Power Down the LG G4
5. Press and Hold the Volume Up Button on the LG G4
6. While Holding Volume Up, Plug the USB Cable into the LG G4
7. Continue Holding the Volume Up Button After You See ‘Download Mode’
8. Let Go of the Volume Up Button When You See the ‘Firmware Update’ Screen on the LG G4
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Click to collapse
Thanks for reply bro
But my problem is different.
It's (There's no download mode. because the laf.img file isn't existed) .. so my phone has fastboot only.

Hmm if you have the Drivers and App (LGUP) installed then you just connect to PC via MTP Mode then by using the App and selecting the KDZ Image the App Automatically puts the Phone in Download Mode
Go HERE to Download App/Drivers

WAIDroid said:
Hmm if you have the Drivers and App (LGUP) installed then you just connect to PC via MTP Mode then by using the App and selecting the KDZ Image the App Automatically puts the Phone in Download Mode
Go HERE to Download App/Drivers
Click to expand...
Click to collapse
when LGUP tried to put the phone in download mode the Fastboot appeared rather than it..
After that lgup failed to find the COM port.
Guys
There's no download mode.. Laf.img file is missed.!!

You may have to contact LG for a fix then.

hi,
Can anyone provide qcn file? I have no network

S20 ultra cannot enter download / bootloader mode

Hi folks
Anyone seen this issue before (see pic) ?
When I try to enter download / bootloader mode I get stuck on red text 'entering fastboot mode... ".
Odin cannot detect the phone connected to PC
The only way out is to press and hold power and volume down for 5 seconds to reboot normally
Tried factory reset and also tried clear data & clear cache partitions in recovery mode.
FYI I'm on O2 UK branded July 2020 stock firmware

With this steps the problem will be solved:
Power Off
Insert cable on pc
Press Vol Up + Vol Down
Insert cable on phone without releasing the buttons

But I agree, the 'old' method does not work anymore, I am getting the same message as the OP.

M1LL3R said:
With this steps the problem will be solved:
Power Off
Insert cable on pc
Press Vol Up + Vol Down
Insert cable on phone without releasing the buttons
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Amazing worked first time ! Thanks
Is this a very recent change by Samsung? I ran various Google searches but could not find any relevant article on the web or on xda forums