I tried to enter download mode through recovery mode since I couldn't find the proper key combination for the M31 online. But now it's stuck in a black screen with nothing but the words 'entering fastboot' on top. I can't restart it.
I've enabled developer options and OEM unlock but that's all I did.
Press the power button for a long time (A minute at most)
Thank you!
zequihumano said:
Press the power button for a long time (A minute at most)
Click to expand...
Click to collapse
yo it isnt working pls help me out
Just documenting my (M315FXXU2ATJ9) solution (found through trial and error) in case this happens to somebody.
This is what worked for me:
1. Connect your phone to your PC via USB
2. Hold down VOL_UP + VOL_DN + POWER for 10 seconds
Your M31 will turn off and the charging logo will appear.
You can now simply disconnect the USB cable and turn it on normally.
Hope this helps.
Hello,
I had updated my M315F to official OneUI4.1, but I am having battery issues and the phone is bit laggy, so I decided to revert to OneUI3.1 using Odin tool, however on entering the recovery mode and getting into "Reboot to bootloader", device stucks at "Entering fastboot....", and its unresponsive as download mode doesn't start. The first time I did without unlocking the OEM, but even after unlocking the OEM and entering the bootloader, it says "Entering fastboot...., so again restarting phone and repeating the same process. Download mode doesn't start.
Is there anyway to reboot to download mode?
Thanks in advance
Help is much appreciated
Regards
Related
Hello XDA Community,
Sorry I didn't know where to post this...
Two weeks ago I purchased a Lenovo S8-50LC Tablet. It was working fine until last night, I was watching movies on Youtube and chatting with some friends. Then I went to bed and there was still around 50% charge in the battery.
When I woke up, I tired to wake up the device but it didn't respond. I thought it was stuck or something, so I tired to hold the power button for 20 seconds to do a hard reset but still didn't work. After that I plugged it in to a power source with the compatible charger that came with it and the screen light up with no data on it. I tried to power it on then and it showed the Lenovo logo and in a very tiny font underneath the logo it said "Boot Fail, Efi hard drive".
Then it would take me to a screen which says:
"EFI Shell version 2.31 [1.0]
Current running mode 1.1.2
map: Cannot find required map name.
Press ESC in 5 seconds to skip startup.nsh, any other key to continue.
Shell>_"
http://imageshack.com/a/img907/6979/reZJPf.jpg
and that's it!
I don't understand why this screen appears. I mean the tablet was working properly over the night and it had no issues whatsoever, but now it doesn't boot!
Then I tried to power it off and press Volume UP + Volume DOWN + Power Button, it showed a black screen with only one line: "FastBoot Starting...Can't get eMMC Info, revert to default value!"
http://imageshack.com/a/img661/1158/bRg9jj.jpg
That's all what I got...
PS:
1- The tablet does all that only when it's plugged to a power source, but when it's not plugged, it doesn't show anything.
2- When I plug it into the pc via USB, the pc doesn't recognize it.
3- I tried to boot into fastboot mode or recovery mode but it doesn't work either.
Please help me fix my tablet and I hope it's going to be soon. Thank you all in advance!
UPDATE:
1- I left it on the charger for maybe 2 hours and now it's turning on without being plugged in to a power source.
2- When I press Volume UP + Volume DOWN + Power Button, it shows the previous mentioned phrase, but now when I connect it to the pc via USB, windows recognizes it as Lenovo Composite ADB Interface under Android Phone
http://imageshack.com/a/img903/3907/oQdSAB.png
3- Tried to perform some fastboot commands like flash, format and erase, it always fails with the error:
Failed (remote: unknown command)
UPDATE2:
1- When executing ADB commands like adb devices it says "no devices found"
anyone?
Hello. A friend of mine has the same problem. He dropped the device and the screen cracked. After a reboot the tablet is on the same situation. I plugged a keyboard via otg , it stops the countdown in the EFI SHELL, but i can not type anything. I think is an eMMC related problem.
I guess the eMMC is totally fried or something. But, I mean, I didn't leave it on the charger all night or anything, why would it do such a thing!
any solutions or suggestions??
reflash the stock firmware: http://forum.xda-developers.com/showpost.php?p=58934356&postcount=90
mrhamed said:
reflash the stock firmware: http://forum.xda-developers.com/showpost.php?p=58934356&postcount=90
Click to expand...
Click to collapse
Thank you for your reply but it doesn't work .. as I mentioned earlier I don't have a "download mode" because any key combination I try to use just sends me to the shell window .. anymore suggestions would be appreciated!
-unplug usb cable
-turn off
-hold (volum+) and (volume -) towice
-press power button
It should go to fastboot quickly (a black screen with a little text)
Hi,
I own galaxy s3 i9000, currently on custom rom. My phone automatically rebooted and got stuck on bootloop. If I am able to enter in recovery mode, i can wipe cache(which may can help to get out of bootloop). But the problem is I am unable to enter into recovery mode because phone's volume up button is not working and my phone auto reboots every time after power off or reinserting battery. Is there any other way to clear cache or enter into recovery mode?
I dont want to flash my stock rom via odin (because i didnt backup my some important apps and msgs), this will be my last option.
sorry for my bad english
The normal way I get my phone into recovery mode from the PC is using ADB and the command: "adb reboot recovery". However, I bet this won't work in your case for one of several possible reasons: depending on when the bootloop occurs in the boot process, the phone may never reach a point where ADB is able to see your phone in the first place; if this is happening after a flashing a new custom ROM, then also it's unlikely that USB debugging is turned and the PC is not yet authorized to connect with it over ADB.
Another thought, could your power button be stuck down? I had a GS3 SCH-I535 several years ago and the power switch went bad on it, it would keep rebooting, shutting down randomly, or I'd be unable to turn on the screen. I had a switch replaced and it was fine after that. I don't think it's normal for the phone to automatically boot up when you reinsert the battery, that's why I bring that up. Maybe you can wiggle the power button a bit and try to unstick it if that's the case.
I tried to remove and stick back the power button again, but still it didnt worked. By the way fixing power button will not help me to get into recovery mode as my phone's volume up button is also not working, and recently I found out that I cant enter into download mode too because when I press respective buttons (volume down + home + power) for download mode, it gives warning msg to click 'volume up' buttton to enter into download mode or 'volume down' to reboot. Therefore again volume up button is required to enter into download mode too. So the only option remained for me is to visit service center and fix the volume up button.
Hello, I really need help, until yesterday my cell phone was working perfectly but suddenly it was turned off and now it does not turn on, but when I plug it into the power outlet the logo appears, but then reboots, and so on.
didacdedm said:
Hello, I really need help, until yesterday my cell phone was working perfectly but suddenly it was turned off and now it does not turn on, but when I plug it into the power outlet the logo appears, but then reboots, and so on.
Click to expand...
Click to collapse
It looks like your phone is in bootloop.
Go to recovery.
Clean flash your rom after wiping everything except external sd(you will loose your apps and appdata).
Skyther_k said:
It looks like your phone is in bootloop.
Go to recovery.
Clean flash your rom after wiping everything except external sd(you will loose your apps and appdata).
Click to expand...
Click to collapse
Thanks for your answer
I tried that but did not enter the recovery mode, then install via fastboot the recovery twrp and tried again without success. I followed the steps to unbrick my cell but again I did not get a different result. Does the battery have anything to do?
didacdedm said:
Thanks for your answer
I tried that but did not enter the recovery mode, then install via fastboot the recovery twrp and tried again without success. I followed the steps to unbrick my cell but again I did not get a different result. Does the battery have anything to do?
Click to expand...
Click to collapse
Could you please describe in more detail?
Are you able to open fastboot menu by pressing vol down and power button simultaneously?
After opening fastboot menu and selecting recovery what happens?
Have you tried opening the recent TWRP (boot recovery) through fastboot command?
After keeping phone on charging is the phone showing charging animation(I'm assuming that the phone is switched off while charging)?
Skyther_k said:
Could you please describe in more detail?
Are you able to open fastboot menu by pressing vol down and power button simultaneously?
After opening fastboot menu and selecting recovery what happens?
Have you tried opening the recent TWRP (boot recovery) through fastboot command?
After keeping phone on charging is the phone showing charging animation(I'm assuming that the phone is switched off while charging)?
Click to expand...
Click to collapse
Enter the fastboot mode by pressing the power and volume keys down simultaneously and install the recovery then I returned to the menu of the fastboot and I wanted to enter the recovery and it stays in the bootloop, does not really try to launch the recovery via fastboot, when I get home Will be the first thing I try.
After leaving it a day connected to the power outlet does not leave the normal logo indicating that it is charging, in fact shows a warning that I had not seen before, it is a plug with an arrow towards 2 points (I suppose it is the outlet, when I get home I Update the post with the image mentioned)
hey, i've got a problem.
i'm running on Oreo 20r and installed Magisk using TWRP.
after rebooting, my device stucks in a bootloop.
is there any solution for my problem?
flashed magisk 17?
yes...
okay, actually I am currently stucked with the same issue too.
But I just got back my TWRP by doing following :
1) Boot into download mode (https://www.youtube.com/watch?v=_mycJDiFUPk)
2) Still in download mode, press and hold "vol down + power" (this time USB cable is still connected to PC and phone), it will reboot the phone, hold both button till you get in fastboot mode
3) once in fastboot mode, flash back TWRP as per unlocking guide
Now I am still in TWRP, hesitating what to do next. lol
Hope it helps a bit
it's not possible for me.
my device reacts to nothing... no keys, no recovery, no download mode
bootlooping like no tomorrow
maybe you can install KDZ-file using LGUP
or try to flash ZIP-file
https://forum.xda-developers.com/lg-v30/development/rom-eu-lg-h930-21a-rom-t3830169
mrmojoman said:
it's not possible for me.
my device reacts to nothing... no keys, no recovery, no download mode
bootlooping like no tomorrow
maybe you can install KDZ-file using LGUP
Click to expand...
Click to collapse
I just clean flashed back Boombox 1.3 with magisk 16.0, so far booting up good.
I think you need to try again.
The download mode is a bit tricky, need to very fast hold long power button till off, once off, hold the vol up and connect the USB cable to PC. it should trigger the download mode
The bootloop that you have now, is just "LG V30 ThinQ" and the "unlocked bootloader" msg right? same as me I think
maybe you can install KDZ-file using LGUP
I just clean flashed back Boombox 1.3 with magisk 16.0, so far booting up good.
I think you need to try again.
The download mode is a bit tricky, need to very fast hold long power button till off, once off, hold the vol up and connect the USB cable to PC. it should trigger the download mode
The bootloop that you have now, is just "LG V30 ThinQ" and the "unlocked bootloader" msg right? same as me I think
Click to expand...
Click to collapse
it's not possible to turn my device off. i hold power button for minutes and nothing happend. i tried also in combinations with volume keys.
mrmojoman said:
it's not possible to turn my device off. i hold power button for minutes and nothing happend. i tried also in combinations with volume keys.
Click to expand...
Click to collapse
okay, let me try describe my steps in details :
1) Phone is bootlooping, USB cable is connected to Phone, NOT to PC
2) Hold down power button only till the screen becomes "black"
3) Once "black", quickly hold the "vol UP" and connect the USB cable to the PC
4) Now it should show the "download mode"
5) Without removing the USB cable, hold "power + vol DOWN"
6) Once screen becomes "black", release the "power" button, hold the "vol DOWN"
7) Until you see the "fastboot mode"
8) Now you can flash TWRP back using fastboot command from the PC
9) Boot back to TWRP
p/s : yes, the phone cannot be turned off, for long time, but it can be for a very short time. Need to use that short time to trigger all the keys
I have the same problem after flashing Magisk 17. I am in a bootloop between LG black start and root/unlocked bootloader warning screen.
I followed your steps 1-7 in a command line screen (as administrator) and it works but it seems that recovery flash is not working because the command line screen show me a very short time in the recovery flashing work (see attached image).
"fastboot reboot" returns me to the bootloop.
"Power Off" and "Restart" options in the phone returns to me to the bootloop again.
If I unplug the USB cable in the fastboot screen, the phone goes to the splash black screen and does nothing.
WTF!!! it's working.
i tried it one more time like you described it.
think i did it too slow before. booted into TWRP and the rest will be no problem (i hope so).
thank you sooo much!
I have the same problem after flashing Magisk 17. I am in a bootloop between LG black start and root/unlocked bootloader warning screen.
I followed your steps 1-7 in a command line screen (as administrator) and it works but it seems that recovery flash is not working because the command line screen show me a very short time in the recovery flashing work (see attached image).
"fastboot reboot" returns me to the bootloop.
"Power Off" and "Restart" options in the phone returns to me to the bootloop again.
Click to expand...
Click to collapse
you have to reboot directly into TWRP after flashing it!
fastboot boot TWRP***.img
How do you booted into TWRP??
trekminal said:
How do you booted into TWRP??
Click to expand...
Click to collapse
use this description to enter download mode and flash TWRP using fastboot.
but after you flashed TWRP, you have to boot into TWRP via fastboot using this command fastboot boot TWRP-3.2.1-joan-v0.1.img
1) Phone is bootlooping, USB cable is connected to Phone, NOT to PC
2) Hold down power button only till the screen becomes "black"
3) Once "black", quickly hold the "vol UP" and connect the USB cable to the PC
4) Now it should show the "download mode"
5) Without removing the USB cable, hold "power + vol DOWN"
6) Once screen becomes "black", release the "power" button, hold the "vol DOWN"
7) Until you see the "fastboot mode"
8) Now you can flash TWRP back using fastboot command from the PC
9) Boot back to TWRP
Click to expand...
Click to collapse
Yeah! I booted into TWRP, I restored a nandroid from last week and all works fine again. THANK YOU!!
mrmojoman said:
WTF!!! it's working.
i tried it one more time like you described it.
think i did it too slow before. booted into TWRP and the rest will be no problem (i hope so).
thank you sooo much!
Click to expand...
Click to collapse
Hey glad that it works for you too
Sent from my LG-H930 using Tapatalk
mrmojoman said:
use this description to enter download mode and flash TWRP using fastboot.
but after you flashed TWRP, you have to boot into TWRP via fastboot using this command fastboot boot TWRP-3.2.1-joan-v0.1.img
Click to expand...
Click to collapse
how did you reflash Magisk 16 after?
@ChazzMatt HAve you looked at this? Some of are having issues after Magisk updated the Magisk app and then lost root...I guess we shouldnt have flashed 17, but when I try and reflash 16 I get the "updater process error" does that mean my only option is to format SD again, or do I have to start from scratch?
islandfever said:
how did you reflash Magisk 16 after?
@ChazzMatt HAve you looked at this? Some of are having issues after Magisk updated the Magisk app and then lost root...I guess we shouldnt have flashed 17, but when I try and reflash 16 I get the "updater process error" does that mean my only option is to format SD again, or do I have to start from scratch?
Click to expand...
Click to collapse
No, see the last few posts of WTF thread. You just have to uninstall 16 first.
Guys I have a huge problem.....
I uninstalled magical 16 using the official uninstaller.....the device went into a bootloop I was able to boot to recovery but the data is now decrypted.....so tried to use OTG to restore a android backup and now I have a "the backup may not boot unless you change back to ext4"
I am at my wits end kindly help
Edit: came out of it. Thanks
creezalird said:
okay, let me try describe my steps in details :
1) Phone is bootlooping, USB cable is connected to Phone, NOT to PC
2) Hold down power button only till the screen becomes "black"
3) Once "black", quickly hold the "vol UP" and connect the USB cable to the PC
4) Now it should show the "download mode"
5) Without removing the USB cable, hold "power + vol DOWN"
6) Once screen becomes "black", release the "power" button, hold the "vol DOWN"
7) Until you see the "fastboot mode"
8) Now you can flash TWRP back using fastboot command from the PC
9) Boot back to TWRP
p/s : yes, the phone cannot be turned off, for long time, but it can be for a very short time. Need to use that short time to trigger all the keys
Click to expand...
Click to collapse
I am stuck with the same kinda issue. By mistake restarted the Phone after wiping the phone for a fresh rom install. now i can see only the LG boot logo. There is no way to power off the phone. Pressed the power button alone for couple of minute but no use. Tried pressing the Vol Down and power to restart. I get a 1 sec window when the phone is off between the restarts but your method does not work in that short time. Is there a way to power off the phone ?
basically there is no Rom on it and does not detect on the PC when plugged in
Please help if you know anything
rupeshrudy9 said:
I am stuck with the same kinda issue. By mistake restarted the Phone after wiping the phone for a fresh rom install. now i can see only the LG boot logo. There is no way to power off the phone. Pressed the power button alone for couple of minute but no use. Tried pressing the Vol Down and power to restart. I get a 1 sec window when the phone is off between the restarts but your method does not work in that short time. Is there a way to power off the phone ?
basically there is no Rom on it and does not detect on the PC when plugged in
Please help if you know anything
Click to expand...
Click to collapse
Try going to TWRP
1. hold vol down + power till it off
2. Once it shows the first on screen, release the power button and press back the power button (vol down hold)
3. A menu for factory reset will be shown, agree to it 2 times
4. Then it will boot to TWRP ( no data will be deleted )
Sent from my LG-H930DS using Tapatalk
I tried to flash twrp and now my phone is stuck in a 5 second boot loop.
Fastboot and recovery can't be accessed at all no matter what combination I make. vol+ power, vol- power, both +- power, hold 40 secs 60secs (useless because phone reboots in 5 secs) , all tried. Every 5 seconds it just boot loops. Help me.. I have it for less than a week. Wanted to flash only because the stock rom was giving problems such as landscape and auto random reboots.
I even tried a script which said would wait in adb detect mode, that didn't work. Guess phone rebooted before my pc could detect it. Tried installing intelSOC method as suggested in another thread, the short reboot is tough to get by.
By the way, it's an umidigi china phone.
bump.. pls help!
Hi , let your battery to completely empty , press vol + and plug usb to see if phone goes into Fastboot mode if not try Vol - and plug usb .
Both didn't work. But thanks.
Teddy Lo said:
Hi , let your battery to completely empty , press vol + and plug usb to see if phone goes into Fastboot mode if not try Vol - and plug usb .
Click to expand...
Click to collapse