I wonder if anyone knows how to solve this issue. I can only turn on the phone with power + volume up and it will show this message for a few seconds then power down.
I found this thing on the internet to flash back to stock rom but I dont know how to get my phone to download mode because it will power down real fast after showing this message. Your help is much appreciated.
http://www.lg-phones.org/how-to-flash-unbrick-lg-g-flex-back-to-stock.html
ERROR: Boot certification verify
[720]----------------------------------------------------------------
[720]
[720]Secure Booting Error
[720]Cause: Boot certification verify
[720]
[720]----------------------------------------------------------------
Yup I seen it 100 times hope you got recovery with something to flash to fix it
To power down once you see this screen just press and hold the power button about 20 secs or so. It will go blank screen then off. Don't release power yet keep holding. It will come back to lg screen again for a brief second then it will power off quickly. You'll notice it going off for good cuz it kinda has that 60's retro TV off look
---------- Post added at 01:25 PM ---------- Previous post was at 01:21 PM ----------
If you don't have recovery you may be able to follow this guide. I used it on an lg g2 but you'll have to have your devices .img's and the method should be the same regardless of device. Just be careful. And don't flash stock recovery.img with this.
http://forum.xda-developers.com/showthread.php?t=2582142<br />
Hi,
So I flashed CM12 to my phone - the most recent nightly. All was good except it wasn't recognizing the SIM. So I asked in reddit and was told it was a new issue and to flash back to the 18th. My computer no longer recognizes my phone being plugged into it via USB, so I just directly downloaded it, booted into recovery, and flashed the version from the 18th.
Now my phone is stuck on an endless boot animation of the little blue alien and won't boot up. Any next steps would be greatly appreciated!
Thanks.
Can you get into download mode?
Volume down, home, and power.
---------- Post added at 04:47 AM ---------- Previous post was at 04:46 AM ----------
Or recovery?
Volume up, home, and power?
I'm basically locked out of fastboot and recovery, neither adb commands or power/volume keys are helping.
I'm on Resurrection Remix Nougat version 5.8.4 9 (september 2017, outdated) and I'm not quite sure how to fix this issue.
Any help is really appreciated, thanks.
I fixed the issue
Have you fixed this ?
If not have you tried booting in to recovery via the about phone -> system update -> three dots at the top right and 'reboot to recovery mode'
?
hey, I have the same issue. I cant boot into recovery mode anymore. how did you fix it?
1.Power off
2.Hold vol+,vol-,power button together until you see mi logo, release power button.
3.wait, maybe take more than 10 secs.
Hi i am new to this redmi devices,
i have waited 72hours for my phone to unlock, and unlocked it with Miunlock method, now i downloaded Twrp official one and flashed normally.. and booted into it, i thought everything was going fine..
so i rebooted my phone, it has been stuck at MI logo with Unlocked message for 30 mins..
got a doubt, and connected my phone again.. now Adb cant detect my device, i want my phone to be detected by ADB.. but its not happening..
i tried pressing V+, V- and power button but couldnt boot into TWRP, instead it booted me to MI recovery,
i tried wiping the phone, but no use.. its still stuck at MI unlocked logo..
any help ?? please
i had flashed TWRP official 3.2.1,
---------- Post added at 02:01 PM ---------- Previous post was at 01:43 PM ----------
finally made it boot thanks in adv
Hi,
I have got a huge problem: got bootloop after flashing Havoc OS because I forgot to instal bootloop fix. But it's not the worse. I have broken volume up button so I cant go to recovery by power+volume up, and, I dont know why, after pressing power+volume down, my phone turn off and I cant even go to fastboot.
Any ideas what can I do?
Please try to press the power button for at least 10 seconds to force reboot the phone, when the MI logo shows up, press power+volume down and enter fastboot. Then connect to computer and reboot to recovery via ADB.
I did that, but the fastbot screen doesn't show up. It was like that because I had Darkness Kernel and it show always darkness theme instead of f.e. fastbot screen. But thanks for answer @andoidZhao.
Problem already solved. Thread's dead :]
Same happened with me..... my vol down button is not working.. when press vol up + power it isn't go to twrp..... Any method to flash rom while phone switch off??
---------- Post added at 06:48 AM ---------- Previous post was at 06:48 AM ----------
KojiroH said:
I did that, but the fastbot screen doesn't show up. It was like that because I had Darkness Kernel and it show always darkness theme instead of f.e. fastbot screen. But thanks for answer @andoidZhao.
Problem already solved. Thread's dead :]
Click to expand...
Click to collapse
How buddy pls tell me
Ak's World said:
Same happened with me..... my vol down button is not working.. when press vol up + power it isn't go to twrp..... Any method to flash rom while phone switch off??
---------- Post added at 06:48 AM ---------- Previous post was at 06:48 AM ----------
How buddy pls tell me
Click to expand...
Click to collapse
Sorry mate, I can't help you. I went to the recovery through the fastbot.
Cant get into downlod mode of recovery. It just loops back to this screen (see attached) have tried it being attached to PC etc..any ideas??????
Maybe try (Emergency) Recovery mode in Smartswitch PC App?
dezborders said:
Maybe try (Emergency) Recovery mode in Smartswitch PC App?
Click to expand...
Click to collapse
No luck with Recovery mode in SmartSwitch PC app, it says "smart switch does not support initializing, please contact service center"
Tried to flash magisk tar file via odin after enable oem unlock in developer options. However, at the end of flash device shows boot-loader locked and device always boot to screen showing " An error has occurred while update the device software. User Emergency recovery function in the smart Switch PC software"
Mode: S10 5G SM-G977B
AOSV: Android 10. DTM-G977BXXU2BSL2
Any input how to enter into download mode?
Kozmike, wait until the phone battery dies, charge to 40% and boot into download mode. Flash the original firmware for your Model.
@zeroktal, The device never boots directly into Download mode, FYI on S10-5G (SM-G977B) the download mode standard key combo(Vol-Down+Bixy+Power) is disabled and the only way to enter into download mode is to first boot into recovery mode and select menu option boot into boot-loader.
Did you wait for the battery to die? Also you CAN boot directly into download mode. I know this because, I literally just did it 10 minutes ago. This exact process, dead battery and all.
Heyya guys, I've personally could always boot directly into download mode full battery or not. Regardless if you manage to boot to download mode, flash stick non edited firmware first to see if you make progress, the bootloader being locked is a little scary but I'm 50% sure you can flash stock firmware still. Also you've stated you can get into recovery, is this stick recovery menu or twrp?. If twrp format cache, if stock have you tried a normal format?
zeroktal said:
Did you wait for the battery to die? Also you CAN boot directly into download mode. I know this because, I literally just did it 10 minutes ago. This exact process, dead battery and all.
Click to expand...
Click to collapse
Yes, the device will show the "Emergency recovery mode" screen only when I plugin the charger cable. and will die when unplugged the charging cable. tired different approach to enter into download mode but no luck, the device always boots to emergency recovery screen.
BTW is your device SM-G977B 5G with android-10? may be android-9 has standard key combo to get into download mode.
---------- Post added at 05:17 PM ---------- Previous post was at 05:11 PM ----------
MarshiMello said:
Heyya guys, I've personally could always boot directly into download mode full battery or not. Regardless if you manage to boot to download mode, flash stick non edited firmware first to see if you make progress, the bootloader being locked is a little scary but I'm 50% sure you can flash stock firmware still. Also you've stated you can get into recovery, is this stick recovery menu or twrp?. If twrp format cache, if stock have you tried a normal format?
Click to expand...
Click to collapse
I had stock recovery, may I know how did you unlock the bootloader? Please explain the steps in detail.
I'm android 10-sm-g977b too. Standard button combos work for me. I unlocked my bootloader over 6 months ago, but the steps are available. The generally gist is going into developer menu, turning on OEM unlock, booting into download mode and holding a certain button to finish the process. Though im not 100 sure but it may wipe your data. Also if say you don't go download mode and unlock straight away you may need to wait a week to try agajn as the option would be greyed out
---------- Post added at 05:55 PM ---------- Previous post was at 05:53 PM ----------
kozmike said:
Yes, the device will show the "Emergency recovery mode" screen only when I plugin the charger cable. and will die when unplugged the charging cable. tired different approach to enter into download mode but no luck, the device always boots to emergency recovery screen.
BTW is your device SM-G977B 5G with android-10? may be android-9 has standard key combo to get into download mode.
---------- Post added at 05:17 PM ---------- Previous post was at 05:11 PM ----------
I had stock recovery, may I know how did you unlock the bootloader? Please explain the steps in detail.
Click to expand...
Click to collapse
https://www.google.com/amp/s/www.re...galaxy-s10-5g-sm-g977b-android-9-pie.html/amp refer to this, steps should be the same regardless of android version.
---------- Post added at 06:00 PM ---------- Previous post was at 05:55 PM ----------
kozmike said:
Yes, the device will show the "Emergency recovery mode" screen only when I plugin the charger cable. and will die when unplugged the charging cable. tired different approach to enter into download mode but no luck, the device always boots to emergency recovery screen.
BTW is your device SM-G977B 5G with android-10? may be android-9 has standard key combo to get into download mode.
---------- Post added at 05:17 PM ---------- Previous post was at 05:11 PM ----------
I had stock recovery, may I know how did you unlock the bootloader? Please explain the steps in detail.
Click to expand...
Click to collapse
Also remember you must have your phone plugged into the computer with the computer having all the correct drivers for you to get into download mode, otherwise the button combo will do nothing and holding those buttons without the cable will just turn your device on and off as the phone thinks your just holding the power button down and that's it ?
MarshiMello said:
I'm android 10-sm-g977b too. Standard button combos work for me. I unlocked my bootloader over 6 months ago, but the steps are available. The generally gist is going into developer menu, turning on OEM unlock, booting into download mode and holding a certain button to finish the process. Though im not 100 sure but it may wipe your data. Also if say you don't go download mode and unlock straight away you may need to wait a week to try agajn as the option would be greyed out
---------- Post added at 05:55 PM ---------- Previous post was at 05:53 PM ----------
https://www.google.com/amp/s/www.re...galaxy-s10-5g-sm-g977b-android-9-pie.html/amp refer to this, steps should be the same regardless of android version.
---------- Post added at 06:00 PM ---------- Previous post was at 05:55 PM ----------
Also remember you must have your phone plugged into the computer with the computer having all the correct drivers for you to get into download mode, otherwise the button combo will do nothing and holding those buttons without the cable will just turn your device on and off as the phone thinks your just holding the power button down and that's it
Click to expand...
Click to collapse
Thanks for the infos MarshiMello, I will let you know once I back to work. To boot into download mode I always tried to press Vol-DN+Bixy+Power. will try the new approach as suggested in the link by you..
MarshiMello said:
I'm android 10-sm-g977b too. Standard button combos work for me. I unlocked my bootloader over 6 months ago, but the steps are available. The generally gist is going into developer menu, turning on OEM unlock, booting into download mode and holding a certain button to finish the process. Though im not 100 sure but it may wipe your data. Also if say you don't go download mode and unlock straight away you may need to wait a week to try agajn as the option would be greyed out
---------- Post added at 05:55 PM ---------- Previous post was at 05:53 PM ----------
https://www.google.com/amp/s/www.re...galaxy-s10-5g-sm-g977b-android-9-pie.html/amp refer to this, steps should be the same regardless of android version.
---------- Post added at 06:00 PM ---------- Previous post was at 05:55 PM ----------
Also remember you must have your phone plugged into the computer with the computer having all the correct drivers for you to get into download mode, otherwise the button combo will do nothing and holding those buttons without the cable will just turn your device on and off as the phone thinks your just holding the power button down and that's it
Click to expand...
Click to collapse
Thanks for the link Marshimello. I revive my S10.
kozmike said:
Thanks for the link Marshimello. I revive my S10.
Click to expand...
Click to collapse
No worries mate, enjoy your working phone ?
MarshiMello said:
No worries mate, enjoy your working phone
Click to expand...
Click to collapse
kozmike said:
Thanks for the link Marshimello. I revive my S10.
Click to expand...
Click to collapse
Good job guys, i'm happy to see you guys helped each other and it was awaken from the dead! :good:
Hi XDA community.
I have the same issue as CP-93. I own a SK Telecom Galaxy S10 5G SM-G977N.
I tried yesterday to flash a custom rom, so first I flashed the TWRP recovery using Odin, then I was stuck after flashing the recovery in a bootloop with the same screen as CP-93 attached in this thread, with no access to recovery mode nor download mode, it just keeps rebooting until the battery dies I guess.
Can someone please explain to me how can I access again the download mode so I can reflash the stock rom?
Thanks in advance for the amazing support of this community.
Best regards.
I have the same problem ... how is he?