Database Develop

Error message when starting

was with the original rom lg. and then went instalr the recovery of the cyanogen rom manager app, and then hung up the phone and now the message appears in red at the top of the screen
"Critical Failure: Unable to start Kernel.
Unrecoverable bootloader error (0x00000002)"
and I can not get into download mode to install the original rom again.
and now what do I do? I lost my phone?

you flashed cwm without unlocking your bootloader. re-flash latest jellybean kdz file for your phone using http://forum.xda-developers.com/showthread.php?t=2069723, then read some more about unlocking bootloader, and then start again.

Flying_Bear said:
you flashed cwm without unlocking your bootloader. re-flash latest jellybean kdz file for your phone using http://forum.xda-developers.com/showthread.php?t=2069723, then read some more about unlocking bootloader, and then start again.
Click to expand...
Click to collapse
but now I am unable to get into download mode on the phone. is
" Now just hold down vol - key ( hold hold hold dont release !!!! ) and plug the USB cable until you get screen like this :-"
he does not. whenever I do this it only vibrates strong and goes to the screen with the error message. I do not know why that. remember one time it happened to me already but can not remember how I resolved it is possible to even lose the download mode?

Its not possible afaik. Are you sure you are holding only vol - key and plugging in? Dont hold power key!

yes, I'm almost the whole day trying to get into download mode by pressing volume down + connecting the usb. and whenever it vibrates strong and hangs on lg logo. tried to volume up + usb connect. and no download mode. I'm going crazy with this phone. otherwise hesitate to hard reset? or other shortcut to download mode?

Rafael20. said:
yes, I'm almost the whole day trying to get into download mode by pressing volume down + connecting the usb. and whenever it vibrates strong and hangs on lg logo. tried to volume up + usb connect. and no download mode. I'm going crazy with this phone. otherwise hesitate to hard reset? or other shortcut to download mode?
Click to expand...
Click to collapse
hard reset wont help you, as far as i know, you somehow need to enter s/w upgrade screen. did you try it with battery out?

he battery of the same error, and no battery it does nothing, or vibrate, or flash screen, nothing happens

Will I not be able to see my optimus running again? :crying:

it is not possible to load the kernel, what could I do?

Critical Failure: Unable to start Kernel. Unrecoverable bootloader error (0x00000002)
Rafael20. said:
it is not possible to load the kernel, what could I do?
Click to expand...
Click to collapse
Hi Raphael20 and everyone else,
Did you manage to figure out a solution to this? I have the same issue, i.e. cannot start my phone by holding the power button. Not even when people suggest to get to the S/W Update screen by holding the Volume down + plug into the computer.
I got to this error when I tried to do a factory reset. I installed the ClockworkMod Recovery. Then the factory reset via Volume up + Power button gave me the "Critical Failure: Unable to start Kernel" error. I somehow managed to get access to my phone by holding the Volume down + plug into the computer. Then tried to do a factory reset via the system settings of my phone. My phone restarted and then gave me the "Critical Failure: Unable to start Kernel" screen of death! Now Volume down + plug into the computer gives me the "Critical Failure: Unable to start Kernel", no matter whether I have restarted my computer and I have tried another computer. It seems that the bootloader is wrecked.
Does anyone have any suggestions?
Thanks!

Bricked Note 9 - N960F

I have been flashing roms for years on Samsung Devices and every time I had an issue in the past, I was able to fix it - somehow - some way - until now - I believe I have finally - really bricked my phone but in a last ditch desperate effort am hoping someone can help.
Here is the issue:
I was using the most recent Odin to flash the most recent firmware for N960F - the odin flash failed halfway thru - don't know why - it just failed. No error message - but in the top of the column where it usually says PASS when you finish flashing - it said fail.
The phone screen was a blue screen that said the update to my phone has failed - use Smart Switch emergency recovery.
I connected my PC to the phone via USB and when I started Smart Switch - it says my device is not supported. I tried to reboot the phone - tried to turn it off - tried to put it in download mode - and each time it simply goes back to the screen saying that I needed to use Smart Switch Emergency Recovery. Which doesn't work, each time I attempt to use it. Device Not Supported.
I tried to power off the phone and it won't power off. Held power button and volume downfor over 1 minute and nothing happens. (Same thing with power and volume up - power, bixby and volume down) I also tried getting into download mode by holding Volume Down and Bixby and then plugged phone into USB and PC (with Odin open on my PC) and nothing happens.
I have trued everything I can think of - hoping there is something someone can suggest that might work to help me do an emergency recovery or flash stock back onto my phone? Or am I holding an ineffective boat anchor ?
Thanks in advance for your assistance - hoping someone can help.

Geekser said:
I have been flashing roms for years on Samsung Devices and every time I had an issue in the past, I was able to fix it - somehow - some way - until now - I believe I have finally - really bricked my phone but in a last ditch desperate effort am hoping someone can help.
Here is the issue:
I was using the most recent Odin to flash the most recent firmware for N960F - the odin flash failed halfway thru - don't know why - it just failed. No error message - but in the top of the column where it usually says PASS when you finish flashing - it said fail.
The phone screen was a blue screen that said the update to my phone has failed - use Smart Switch emergency recovery.
I connected my PC to the phone via USB and when I started Smart Switch - it says my device is not supported. I tried to reboot the phone - tried to turn it off - tried to put it in download mode - and each time it simply goes back to the screen saying that I needed to use Smart Switch Emergency Recovery. Which doesn't work, each time I attempt to use it. Device Not Supported.
I tried to power off the phone and it won't power off. Held power button and volume downfor over 1 minute and nothing happens. (Same thing with power and volume up - power, bixby and volume down) I also tried getting into download mode by holding Volume Down and Bixby and then plugged phone into USB and PC (with Odin open on my PC) and nothing happens.
I have trued everything I can think of - hoping there is something someone can suggest that might work to help me do an emergency recovery or flash stock back onto my phone? Or am I holding an ineffective boat anchor ?
Thanks in advance for your assistance - hoping someone can help.
Click to expand...
Click to collapse
Have you tried using a different usb c cable? Just a thought

Geekser said:
I have been flashing roms for years on Samsung Devices and every time I had an issue in the past, I was able to fix it - somehow - some way - until now - I believe I have finally - really bricked my phone but in a last ditch desperate effort am hoping someone can help.
Here is the issue:
I was using the most recent Odin to flash the most recent firmware for N960F - the odin flash failed halfway thru - don't know why - it just failed. No error message - but in the top of the column where it usually says PASS when you finish flashing - it said fail.
The phone screen was a blue screen that said the update to my phone has failed - use Smart Switch emergency recovery.
I connected my PC to the phone via USB and when I started Smart Switch - it says my device is not supported. I tried to reboot the phone - tried to turn it off - tried to put it in download mode - and each time it simply goes back to the screen saying that I needed to use Smart Switch Emergency Recovery. Which doesn't work, each time I attempt to use it. Device Not Supported.
I tried to power off the phone and it won't power off. Held power button and volume downfor over 1 minute and nothing happens. (Same thing with power and volume up - power, bixby and volume down) I also tried getting into download mode by holding Volume Down and Bixby and then plugged phone into USB and PC (with Odin open on my PC) and nothing happens.
I have trued everything I can think of - hoping there is something someone can suggest that might work to help me do an emergency recovery or flash stock back onto my phone? Or am I holding an ineffective boat anchor ?
Thanks in advance for your assistance - hoping someone can help.
Click to expand...
Click to collapse
I actually ran into the same exact issue about a week ago, and was sure I bricked my phone. However, when it is stuck on that screen saying to use the emergency Smart Switch recovery, it is actually already in download mode.
After realizing that, I simply used Odin, saw that it detected the phone, and flashed back to my original N960U1 firmware which worked perfectly. I see that you mentioned you tried Odin, but was that when you were trying to go into download mode/rebooting? See if it shows it is connected when it's on the stuck blue screen.

a63548 said:
I actually ran into the same exact issue about a week ago, and was sure I bricked my phone. However, when it is stuck on that screen saying to use the emergency Smart Switch recovery, it is actually already in download mode.
After realizing that, I simply used Odin, saw that it detected the phone, and flashed back to my original N960U1 firmware which worked perfectly. I see that you mentioned you tried Odin, but was that when you were trying to go into download mode/rebooting? See if it shows it is connected when it's on the stuck blue screen.
Click to expand...
Click to collapse
Wow - sometimes the most simple solutions are the right ones. Thank you so much. I was so worried over bricking the device that I didn't realize it was still being recognized by Odin.
I reloaded ODIN and flashed the firmware and it worked. PHone is booting up now. NEver seen an issue like this before - but glad you had the experience to share to help me figure it out. Thanks so much for your help!

Geekser said:
Wow - sometimes the most simple solutions are the right ones. Thank you so much. I was so worried over bricking the device that I didn't realize it was still being recognized by Odin.
I reloaded ODIN and flashed the firmware and it worked. PHone is booting up now. NEver seen an issue like this before - but glad you had the experience to share to help me figure it out. Thanks so much for your help!
Click to expand...
Click to collapse
Awesome to hear it is booting up! Happy to be able to help

Had same problem and i download my firmware from sammy ( its asually the one from tmobile) while i have the international version. The bootloader is all i flashed and it boot back on
Sent from my [device_name] using XDA-Developers Legacy app
---------- Post added at 08:40 PM ---------- Previous post was at 08:39 PM ----------
Just flash same bootloader on your version through odin and it will boot back on
Sent from my [device_name] using XDA-Developers Legacy app

I had the same issue on S7 exynos trying to downgrade firmware. Flashing latest firmware via Odin solved it.

bootloop android logo

I have problem I formatted my phone via recovery and no system found. My phone going to bootloop after power on Every time i power ON the device it gets to the screen that says "Powered by android" device untrusted and keeps rebooting. Many buttons combos not working. only way to turn device off is battery disconnect. Help

mati5000 said:
I have problem I formatted my phone via recovery and no system found. My phone going to bootloop after power on Every time i power ON the device it gets to the screen that says "Powered by android" device untrusted and keeps rebooting. Many buttons combos not working. only way to turn device off is battery disconnect. Help
Click to expand...
Click to collapse
Only you can do is to flash original firware with NOST flasher.

OK i get this software but i cannot get this phone to download mode and phone has only bootloader unlocked not critical. What i can do?

OK i successfully boot my phone to download mode and all fixed. Thread closed

I messed up, Bootloop to error screen

Hi together,
i wanted to update my galaxy s10 to android 10 using odin and flashing the firmware.
I wanted to flash bl,ap,csc and cp. during the flashing the device unplugged and I was only able to press powerbutton and vol- for 7 sec.
Then the phone rebooted and i was facing an error screen saying:
An error occured while updating the device software. Use the emergency recovery function in the Smart Switch PC software.
Now i cant get in to fastboot again and smart switch is not detecting the device.
What can i do?

Doest matter, use odin load all 4 files and it will work again

Ty for the replied I just tried IT and IT worked Ty.

SM-T510 BOOT LOOP issue

Hey guys,
So I'm having issues trying to fix my Samsung Tab A 10.1 ( SM-T510 ).
At first I was trying to install a custom TWRP recovery image, and I had a boot loop where it kept getting stuck at the SAMSUNG splash screen(not the initial samsung boot screen that shows TAB A 10.1). I however overcame that issue by factory reseting and through some additional tinkering.
Now the part I'm starting to regret.
I tried once again to flash the custom TWRP to the tablet, but this time I forgot to tick the "autoreboot" setting off.
So ODIN shows a PASS for the flash, but now when the tablet boots its stuck in the following boot sequence:
START:
Initial Samsung boot screen asking to press power button to continue due to unknown boot image source etc
PRESS POWER
SAME INITIAL SAMSUNG BOOT SCREEN minus the power button prompt, lasts for about 3-5 seconds
REBOOT
Now I have managed to get into download mode with the tablet connected to a computer.
I CANNOT get into recovery mode to factory reset the tablet, which was the solution the last go around.
I am starting to think that the only way I am going to get the tablet back in original working order, or any working order for that matter is to:
A: LOCATE original firmware for my device, I believe it is GTAXLWIFI firmware for my device. However the files I have found don't seem to be accepted in ODIN...
B: Try to continue on with the TWRP process, which I have tried to reflash the TWRP recovery that I have, and it shows pass. But, the issue persists.
Any suggestions or help would be amazing!
Thanks!

Timing is the key
Set your finger on position where you gonna restart the device.
Hold power + vol down
After the screen restart switch soon as possible you finger to set to recovery by
Hold vol up + down + insert the USB C cable
Remember timing is the key. I have done this for several tabs that screw on my home so you are welcome bro

frontchasack said:
Hey guys,
So I'm having issues trying to fix my Samsung Tab A 10.1 ( SM-T510 ).
At first I was trying to install a custom TWRP recovery image, and I had a boot loop where it kept getting stuck at the SAMSUNG splash screen(not the initial samsung boot screen that shows TAB A 10.1). I however overcame that issue by factory reseting and through some additional tinkering.
Now the part I'm starting to regret.
I tried once again to flash the custom TWRP to the tablet, but this time I forgot to tick the "autoreboot" setting off.
So ODIN shows a PASS for the flash, but now when the tablet boots its stuck in the following boot sequence:
START:
Initial Samsung boot screen asking to press power button to continue due to unknown boot image source etc
PRESS POWER
SAME INITIAL SAMSUNG BOOT SCREEN minus the power button prompt, lasts for about 3-5 seconds
REBOOT
Now I have managed to get into download mode with the tablet connected to a computer.
I CANNOT get into recovery mode to factory reset the tablet, which was the solution the last go around.
I am starting to think that the only way I am going to get the tablet back in original working order, or any working order for that matter is to:
A: LOCATE original firmware for my device, I believe it is GTAXLWIFI firmware for my device. However the files I have found don't seem to be accepted in ODIN...
B: Try to continue on with the TWRP process, which I have tried to reflash the TWRP recovery that I have, and it shows pass. But, the issue persists.
Any suggestions or help would be amazing!
Thanks!
Click to expand...
Click to collapse
Original firmware I used to fix my sm-t510
Account Suspended

flavarasa said:
Timing is the key
Set your finger on position where you gonna restart the device.
Hold power + vol down
After the screen restart switch soon as possible you finger to set to recovery by
Hold vol up + down + insert the USB C cable
Remember timing is the key. I have done this for several tabs that screw on my home so you are welcome bro
Click to expand...
Click to collapse
I think "restarts" may be confusing. Switch from down to up as soon as the screen turns off.

frontchasack said:
Hey guys,
So I'm having issues trying to fix my Samsung Tab A 10.1 ( SM-T510 ).
At first I was trying to install a custom TWRP recovery image, and I had a boot loop where it kept getting stuck at the SAMSUNG splash screen(not the initial samsung boot screen that shows TAB A 10.1). I however overcame that issue by factory reseting and through some additional tinkering.
Now the part I'm starting to regret.
I tried once again to flash the custom TWRP to the tablet, but this time I forgot to tick the "autoreboot" setting off.
So ODIN shows a PASS for the flash, but now when the tablet boots its stuck in the following boot sequence:
START:
Initial Samsung boot screen asking to press power button to continue due to unknown boot image source etc
PRESS POWER
SAME INITIAL SAMSUNG BOOT SCREEN minus the power button prompt, lasts for about 3-5 seconds
REBOOT
Now I have managed to get into download mode with the tablet connected to a computer.
I CANNOT get into recovery mode to factory reset the tablet, which was the solution the last go around.
I am starting to think that the only way I am going to get the tablet back in original working order, or any working order for that matter is to:
A: LOCATE original firmware for my device, I believe it is GTAXLWIFI firmware for my device. However the files I have found don't seem to be accepted in ODIN...
B: Try to continue on with the TWRP process, which I have tried to reflash the TWRP recovery that I have, and it shows pass. But, the issue persists.
Any suggestions or help would be amazing!
Thanks!
Click to expand...
Click to collapse
You can use frija.exe to get the latest stock firmware. To get TWRP you MUST boot to recovery before system. If you allow the tablet to boot to system first, it will overwrite TWRP with the stock recovery. Do this by pressing vol down and power till the screen turns off. As soon as it does, switch from vol down to up while still pressing power and keep holding both till the red warning message appears. You also need to leave the cable attached to the PC while doing this.