Phone is sitting on EMUI boot screen won't load - Mate 8 Q&A, Help & Troubleshooting

Tried to downgrade so I can then upgrade to nougat and now it's just sitting on the EMUI screen asking to reboot/wipe data... anyone know what I can do to fix this?
Thanks

Go to recovery mode and make factory reset

Is it ur problem solved or not yet ?

Related

Help Phone wont start, I am not sure if its bircked.

I am really not sure what happened to the phone but I will tell all I did that might have connection to the current sitiuation.
I rooted the phone a while back , no issues with root.
As internal memory is low on this phone (4 gbs) I used link2SD.I have used in past with other phones never had a issue but this time the apps which were linked magically disappeared and some wont start saying " Application has stopped working " , So I decided to , oh wait I forgot I also had TWRP custom recovery on this phone too , no issues happened with it either, yet. So I decided to restore to a backup I made with TWRP a few days ago, I have previously done this thing and it worked perfectly unlike this time.I booted to recovery then restored to that backup but when I booted back the device wouldn't start! All it was showing was the boot screen(circles moving in weird pattern) I waited around 3 hours then I decided to factory reset , I took out the battery (BAM I did a mistake here I guess) went to recovery did a normal factory reset then again I was at the boot screen looking at circles This time I gave a around 10 hours but it still didnt load up , then I took out the battery again next what I see it when I try to start my phone NOTHING WILL HAPPEN only screen turns on for like few miliseconds showing only back screen (NO KARBON LOGO OR ANYTHING) and goes off again. I tried pressing Vol Up and choose recovery mode but it wont let me go in recovery it turns off again as soon I choose okay (RECOVERY DONT LOAD AT ALL NOT EVEN THE LOGO). Please explain what happened to phone and how can I fix it. :crying: :crying: :crying: :crying:
Go To Karbonn Care
I think I told you its rooted and stuff, which voids warrenty
Same thing happed to me with my sparkle v and now its not even receiving stock firmware via sp flash tool
Flash stock firmware by removing the battery
DeepSahota said:
Go To Karbonn Care
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Hey can you please help me.I have karbon sparkle v.everything is on stock.after marshmello ota updates the phone was little bit unstable .many google apps were getting fc. Recently in decided to factory reset my device.after factory reset I can't get past the "checking connection" screen that we get after factory reset. There is no option to skip that to as usually it is available in other devices and ROMs.can u please tell me how can I fix this.can I flash stock 5.1 via stock recovery ?or maybe 6.0.1 again? I can't bypass the screen so I cannot switch on USB debuinging else everything would have been OK ?.please suggest something

Help! Can't factory reset/ phone locks constantly after update

Hey
I just updated to the new lolipop via the sony software I was in the phone fine then done a reboot and now it loads and get to the lock screen I unlock the phone and it locks again automatically after a second.
I cant really do anything at all now or use the phone. I dont the reboot because Wifi wasn't connecting after the update.
Ive tried doing a factory reset but the screen on boot doesnt seem to be coming up either. whats the correct process just so I can confirm im doing it right. I just want to wipe it!
I held volume key down and powered on. and the screen will just flash and reboot.. so pretty much i cant do anything to fix it
Fixed luckily I had wheres my droid installed and setup and could do a remote factory wipe! .. now everytime i open settings it stops working and crashes. anyone have any idea how to fix that?
Im trying to do a repair now using sony companion

Bootloop nexus 5

Hello,
So here it how it goes:
My N5 freezes suddenly and shortly after it goes into a bootloop ( stuck at Google logo ). And from there on, the only thing I can do is just go into the bootloader.
If I go to recovery mode I can see that I get "msm_sdcc.1/by-name/misc no such directory" or something like that.
The only thing that helps make this issue dissapear is performing an oem unlock in fastboot mode, but this is not a good solution since this is the 2nd time it has happened to me in the past 3 months.
What do you guys suggest I should check/do to prevent this issue from ever happening?
Thanks!
Does the bootloader relock itself at reboot? If it does, the emmc chip is going or gone.
@audit13
The bootloader doesn't relock itself. It remains unlocked even after reboot.
I just unlock it to perform this "trick" that helps me get out of the bootloop. ( also after unlocking it, I perform a fastboot oem lock, done this both times ).
Also, don't know if it is related, when i go into recovery mode i get the android with an X or an ! (forgot which one) which is most probably due to files missing.
The screen with the dead android is normal. No need to relock the bootloader in my opinion.
Have your tried flashing a completely stock rom, including th userdata.img file to see if that solves the issue?
@audit13 Wanted to keep the stock rom with which it had come. Also doesn't an update ( from L to M for example) change the rom completely?
An ota update will move the phone to the latest of the current version (e.g. 5.0 to 5.01). The the ota will move from LP to mm.
Personally, I prefer mm.
So.. The phone did it again today, same behavior, same result ( bootloop out of nowhere ). This time I performed a complete new install of the OS ( wipe cache, factory reset + reflashed a factory image).
At this moment the phone is working as usual and now I will wait and see if the issue reoccurs (hope not).
If someone else has any other ideas an how to prevent or read some logs from the phone ( even if I performed an oem unlock ) please reply.

[Completed] Gionee p52 Bootloop

I bought my phone about 3 months ago (Gionee p5w) and i had no custom roms installed. Yesterday i saw that there is a system update available. I think i rooted my phone using king root(not sure of version). Update on my phone wouldnt install... so i factory reset without clearing the phone memory thats when problem arised, nothing was reset except the text size setting. So i thought of going into factory mode to reset my phone and started phone with vol up and power key pressed . Factory mode didnt show up and now i am stuck in a bootloop. It shows bootloader logo and restarts again and again. I cant even go to normal mode and start my phone. I remember booting into factory mode when i bought it. Please help me fix it
aayushprime said:
I bought my phone about 3 months ago (Gionee p5w) and i had no custom roms installed. Yesterday i saw that there is a system update available. I think i rooted my phone using king root(not sure of version). Update on my phone wouldnt install... so i factory reset without clearing the phone memory thats when problem arised, nothing was reset except the text size setting. So i thought of going into factory mode to reset my phone and started phone with vol up and power key pressed . Factory mode didnt show up and now i am stuck in a bootloop. It shows bootloader logo and restarts again and again. I cant even go to normal mode and start my phone. I remember booting into factory mode when i bought it. Please help me fix it
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Hello & welcome to xda-assist,
first of, we don't provide technical support here our job is to direct you through the boards here on xda-developers.
When you root your phone system updates will cause serious problems if you don't unroot before and revert all changes on system partition. So bootloop was expected to happen.
Only cure for that would be to reflash your phone's firmware, to find A) the appropriate firmware for your phone model and B) lern how to flash on your phone I would suggest you to visit this forum:
http://forum.xda-developers.com/android/help
and
Do a basic Google search on "your phone model + firmware" and "how to flash stock rom on your phone model"
Good luck

Mobile data problem?!

Hello !
Did anyone else experience mobile data bug after the latest update? My data won't turn on unless I put my phone in and out of airplane mode first. I tried doing network reset and wiped the cache in recovery mode but nothing helped. I don't want to to do the hard reset because I'm hoping for the oreo update and I'm planning to do the reset then. Is there any other way to solve this problem?
finac94 said:
Hello !
Did anyone else experience mobile data bug after the latest update? My data won't turn on unless I put my phone in and out of airplane mode first. I tried doing network reset and wiped the cache in recovery mode but nothing helped. I don't want to to do the hard reset because I'm hoping for the oreo update and I'm planning to do the reset then. Is there any other way to solve this problem?
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