ZTE Maven (Z812) stuck on a bootloop - ZTE Z7, Z7 Max, Z7 Mini

When I picked up my ZTE Maven phone, I had found some water inside the phone and it may had short circuited my phone. After my battery fully died, I let my phone sit for a couple hours/overnight. My phone started turning itself on and only showing the ZTE logo and then immediately turns back off. Now it stuck only doing this action, even when I try to charge it. Also, I can enter recovery mode and download mode as well. Any suggestions on how to fix it?

Stuck in the same bootloop, not any water
Same problem here, my ZTE Maven suddenly went in on this failure, loop in boot, shows ZTE logo and then the screen goes black and the red light led is on all the time, if you press "volume up + power on" buttons it can enter in android system recovery, however, none of the options seems to work out a solution. I hope this info can be useful to anyone somehow.

helvinf said:
Same problem here, my ZTE Maven suddenly went in on this failure, loop in boot, shows ZTE logo and then the screen goes black and the red light led is on all the time, if you press "volume up + power on" buttons it can enter in android system recovery, however, none of the options seems to work out a solution. I hope this info can be useful to anyone somehow.
Click to expand...
Click to collapse
Im in the same as you. i dont know which flashtool or firmware to flash, only have an OTA (B19) flashable via recovery, but it checks the partitions, and i mistakenly flashed a diferent boot img. so when the recovery checks the boot it stops installation and im done.

Related

[Q] Bricked phone - Boot loop - Recovery & Download mode not working [HELP]

Hello guys,
I've got a big problem with my I9300 and therefore I would like to ask here for any help. (If I'm in the wrong section, please move the thread to a correct one)
I had installed the Resurrection Remix ROM, v5.2.6. from 30.12.2014 and Googy-Max 2 recovery (CWM based) on my phone. I was using it for days and all worked fine.
One day I turned the phone off and I wanted to restart it. But it never restarted again; it ends up in a boot loop. It shows me the white Samsung Boot-Logo for some seconds, then a total black screen and the same thing repeats in a loop.
So I wanted to get into the recovery for wiping etc. but I couldn’t access the recovery. Nothing happens by pressing the relevant buttons. The device is still hanging in the boot loop. So I wanted to flash via Odin, but this isn't possible. I also can't go into the download mode. After pressing the relevant buttons, the green warning screen appears, which asks me if I really want to go to the download mode. But when I press volume up for "continue" or even if I don't press anything, the phone turns off and the boot loop with the white Samsung Logo starts again.
Therefore I ordered a USB JIG for forcing the device to go into download mode. When I plug the USB JIG in, the device actually goes into download mode but this status holds on only for a few seconds. After accessing download mode through the JIG, after a few seconds the phone turns off, restarts, (and because the JIG is still plugged in) the download mode appears again and it ends in a loop.
At first I thought maybe the power button is sticking and therefore the device turns on and off autonomous. But definitively I can negate it, because I opened the phone and removed the power button and nothing changed. Also by pressing the power button on the mainboard I can clearly hear the "click".
So I started a new attempt. Although the time, in which the device stays in download mode before turning off, is very short (only a few seconds), I tried flashing an other recovery, namely TWRP v2.8.3.0. So I prepared ODIN, plugged the JIG into the device, by appearing the download mode I switched cables and an other person clicked start at ODIN and it worked. So now TWRP is installed. Now I also can't get into recovery but after flashing TWRP there exist two little differences. First, after pressing the relevant buttons, TWRP appears for less than 1 second until the phone turns off. Secondly, when I plug the device in for charging, the Samsung charging logo appears for some seconds, then for less than 1 second appears a charging logo from Lollipop and the device ends up in a loop by displaying alternately the two different charging logos. Before flashing TWRP, the device booted in a boot loop (as I wrote above) by plugging it in for charging.
So the main question: how can I get my device work again
I tried telling you all details so that you have a better view of the problem.
Maybe I should flash a fully (stock) rom, but as I told you the download mode appears only for a few seconds. Flashing a recovery was possible, because the recovery file is very small - 7 MB. A full rom is much bigger and I think by flashing a complete rom, the device would turn off while Odin is flashing, therefore I ask first here for any assistance.
Thank you very much in advance!
beginnerteur said:
Hello guys,
I've got a big problem with my I9300 and therefore I would like to ask here for any help. (If I'm in the wrong section, please move the thread to a correct one)
I had installed the Resurrection Remix ROM, v5.2.6. from 30.12.2014 and Googy-Max 2 recovery (CWM based) on my phone. I was using it for days and all worked fine.
One day I turned the phone off and I wanted to restart it. But it never restarted again; it ends up in a boot loop. It shows me the white Samsung Boot-Logo for some seconds, then a total black screen and the same thing repeats in a loop.
So I wanted to get into the recovery for wiping etc. but I couldn’t access the recovery. Nothing happens by pressing the relevant buttons. The device is still hanging in the boot loop. So I wanted to flash via Odin, but this isn't possible. I also can't go into the download mode. After pressing the relevant buttons, the green warning screen appears, which asks me if I really want to go to the download mode. But when I press volume up for "continue" or even if I don't press anything, the phone turns off and the boot loop with the white Samsung Logo starts again.
Therefore I ordered a USB JIG for forcing the device to go into download mode. When I plug the USB JIG in, the device actually goes into download mode but this status holds on only for a few seconds. After accessing download mode through the JIG, after a few seconds the phone turns off, restarts, (and because the JIG is still plugged in) the download mode appears again and it ends in a loop.
At first I thought maybe the power button is sticking and therefore the device turns on and off autonomous. But definitively I can negate it, because I opened the phone and removed the power button and nothing changed. Also by pressing the power button on the mainboard I can clearly hear the "click".
So I started a new attempt. Although the time, in which the device stays in download mode before turning off, is very short (only a few seconds), I tried flashing an other recovery, namely TWRP v2.8.3.0. So I prepared ODIN, plugged the JIG into the device, by appearing the download mode I switched cables and an other person clicked start at ODIN and it worked. So now TWRP is installed. Now I also can't get into recovery but after flashing TWRP there exist two little differences. First, after pressing the relevant buttons, TWRP appears for less than 1 second until the phone turns off. Secondly, when I plug the device in for charging, the Samsung charging logo appears for some seconds, then for less than 1 second appears a charging logo from Lollipop and the device ends up in a loop by displaying alternately the two different charging logos. Before flashing TWRP, the device booted in a boot loop (as I wrote above) by plugging it in for charging.
So the main question: how can I get my device work again
I tried telling you all details so that you have a better view of the problem.
Maybe I should flash a fully (stock) rom, but as I told you the download mode appears only for a few seconds. Flashing a recovery was possible, because the recovery file is very small - 7 MB. A full rom is much bigger and I think by flashing a complete rom, the device would turn off while Odin is flashing, therefore I ask first here for any assistance.
Thank you very much in advance!
Click to expand...
Click to collapse
Check and make sure that your volume buttons and home button are not stuck also. If they are not, I would suggest a visit to a repair shop as your EMMC chip might be weak already.
beginnerteur said:
Hello guys,
I've got a big problem with my I9300 and therefore I would like to ask here for any help. (If I'm in the wrong section, please move the thread to a correct one)
I had installed the Resurrection Remix ROM, v5.2.6. from 30.12.2014 and Googy-Max 2 recovery (CWM based) on my phone. I was using it for days and all worked fine.
One day I turned the phone off and I wanted to restart it. But it never restarted again; it ends up in a boot loop. It shows me the white Samsung Boot-Logo for some seconds, then a total black screen and the same thing repeats in a loop.
So I wanted to get into the recovery for wiping etc. but I couldn’t access the recovery. Nothing happens by pressing the relevant buttons. The device is still hanging in the boot loop. So I wanted to flash via Odin, but this isn't possible. I also can't go into the download mode. After pressing the relevant buttons, the green warning screen appears, which asks me if I really want to go to the download mode. But when I press volume up for "continue" or even if I don't press anything, the phone turns off and the boot loop with the white Samsung Logo starts again.
Therefore I ordered a USB JIG for forcing the device to go into download mode. When I plug the USB JIG in, the device actually goes into download mode but this status holds on only for a few seconds. After accessing download mode through the JIG, after a few seconds the phone turns off, restarts, (and because the JIG is still plugged in) the download mode appears again and it ends in a loop.
At first I thought maybe the power button is sticking and therefore the device turns on and off autonomous. But definitively I can negate it, because I opened the phone and removed the power button and nothing changed. Also by pressing the power button on the mainboard I can clearly hear the "click".
So I started a new attempt. Although the time, in which the device stays in download mode before turning off, is very short (only a few seconds), I tried flashing an other recovery, namely TWRP v2.8.3.0. So I prepared ODIN, plugged the JIG into the device, by appearing the download mode I switched cables and an other person clicked start at ODIN and it worked. So now TWRP is installed. Now I also can't get into recovery but after flashing TWRP there exist two little differences. First, after pressing the relevant buttons, TWRP appears for less than 1 second until the phone turns off. Secondly, when I plug the device in for charging, the Samsung charging logo appears for some seconds, then for less than 1 second appears a charging logo from Lollipop and the device ends up in a loop by displaying alternately the two different charging logos. Before flashing TWRP, the device booted in a boot loop (as I wrote above) by plugging it in for charging.
So the main question: how can I get my device work again
I tried telling you all details so that you have a better view of the problem.
Maybe I should flash a fully (stock) rom, but as I told you the download mode appears only for a few seconds. Flashing a recovery was possible, because the recovery file is very small - 7 MB. A full rom is much bigger and I think by flashing a complete rom, the device would turn off while Odin is flashing, therefore I ask first here for any assistance.
Thank you very much in advance!
Click to expand...
Click to collapse
Your power button is failing, stuck in 'pressed' position. Try pressing repeatedly power button for several seconds, then release it completely. It shall bring it back to life. Visit your local service, or prepare tin, heat gun and soldering pistol. One button cost $0.2, they are selling them on eBay in sets of three (and 10, and 100....).
Happened to me some time ago, and video on youtube helped me to dismantle my phone, pull broken button out of it, and change it for new.
My phone was cycling like yours.
beginnerteur said:
Hello guys,
I've got a big problem with my I9300 and therefore I would like to ask here for any help. (If I'm in the wrong section, please move the thread to a correct one)
I had installed the Resurrection Remix ROM, v5.2.6. from 30.12.2014 and Googy-Max 2 recovery (CWM based) on my phone. I was using it for days and all worked fine.
One day I turned the phone off and I wanted to restart it. But it never restarted again; it ends up in a boot loop. It shows me the white Samsung Boot-Logo for some seconds, then a total black screen and the same thing repeats in a loop.
So I wanted to get into the recovery for wiping etc. but I couldn’t access the recovery. Nothing happens by pressing the relevant buttons. The device is still hanging in the boot loop. So I wanted to flash via Odin, but this isn't possible. I also can't go into the download mode. After pressing the relevant buttons, the green warning screen appears, which asks me if I really want to go to the download mode. But when I press volume up for "continue" or even if I don't press anything, the phone turns off and the boot loop with the white Samsung Logo starts again.
Therefore I ordered a USB JIG for forcing the device to go into download mode. When I plug the USB JIG in, the device actually goes into download mode but this status holds on only for a few seconds. After accessing download mode through the JIG, after a few seconds the phone turns off, restarts, (and because the JIG is still plugged in) the download mode appears again and it ends in a loop.
At first I thought maybe the power button is sticking and therefore the device turns on and off autonomous. But definitively I can negate it, because I opened the phone and removed the power button and nothing changed. Also by pressing the power button on the mainboard I can clearly hear the "click".
So I started a new attempt. Although the time, in which the device stays in download mode before turning off, is very short (only a few seconds), I tried flashing an other recovery, namely TWRP v2.8.3.0. So I prepared ODIN, plugged the JIG into the device, by appearing the download mode I switched cables and an other person clicked start at ODIN and it worked. So now TWRP is installed. Now I also can't get into recovery but after flashing TWRP there exist two little differences. First, after pressing the relevant buttons, TWRP appears for less than 1 second until the phone turns off. Secondly, when I plug the device in for charging, the Samsung charging logo appears for some seconds, then for less than 1 second appears a charging logo from Lollipop and the device ends up in a loop by displaying alternately the two different charging logos. Before flashing TWRP, the device booted in a boot loop (as I wrote above) by plugging it in for charging.
So the main question: how can I get my device work again
I tried telling you all details so that you have a better view of the problem.
Maybe I should flash a fully (stock) rom, but as I told you the download mode appears only for a few seconds. Flashing a recovery was possible, because the recovery file is very small - 7 MB. A full rom is much bigger and I think by flashing a complete rom, the device would turn off while Odin is flashing, therefore I ask first here for any assistance.
Thank you very much in advance!
Click to expand...
Click to collapse
As said your emmc chip maybe failing.
The dead boot thread maybe of interest to you.
Virnik0 said:
Your power button is failing, stuck in 'pressed' position. Try pressing repeatedly power button for several seconds, then release it completely. It shall bring it back to life. Visit your local service, or prepare tin, heat gun and soldering pistol. One button cost $0.2, they are selling them on eBay in sets of three (and 10, and 100....).
Happened to me some time ago, and video on youtube helped me to dismantle my phone, pull broken button out of it, and change it for new.
My phone was cycling like yours.
Click to expand...
Click to collapse
He said he has tested this and can also hear the micro-switch clicking.
scorpionhd2 said:
Check and make sure that your volume buttons and home button are not stuck also. If they are not, I would suggest a visit to a repair shop as your EMMC chip might be weak already.
Click to expand...
Click to collapse
Virnik0 said:
Your power button is failing, stuck in 'pressed' position. Try pressing repeatedly power button for several seconds, then release it completely. It shall bring it back to life. Visit your local service, or prepare tin, heat gun and soldering pistol. One button cost $0.2, they are selling them on eBay in sets of three (and 10, and 100....).
Happened to me some time ago, and video on youtube helped me to dismantle my phone, pull broken button out of it, and change it for new.
My phone was cycling like yours.
Click to expand...
Click to collapse
Darke5tShad0w said:
As said your emmc chip maybe failing.
The dead boot thread maybe of interest to you.
He said he has tested this and can also hear the micro-switch clicking.
Click to expand...
Click to collapse
Thank you very much for helping! :good:
So the question is, whether it's the power button's or emmc's fault...
I did a little searching and found this video. I've got exactly the same problem like the guy. At 1:06 following the boot loop, at 1:34 following the problem with downlod mode.
Although he thinks it's caused to the sudden death problem, but at least in my case I think it's wrong because months ago I did the eMMC Brickbug Check.
Also I noticed a probably important detail. When I put the battery in the phone, it automatically turns on without pressing the power button like in 1:04-1:09 in the video. Which normal working phone turns itself on by simply putting in the battery...?
So it must get a command for turning on - (possibly through a defect power button?)
@Virnik0, do you remember, if you could hear the micro-switch clicking on your phone before replacing the button on the mainboard?
beginnerteur said:
Also I noticed a probably important detail. When I put the battery in the phone, it automatically turns on without pressing the power button
Click to expand...
Click to collapse
Your power button is faulty, replace it before you try fixing anything else.
Thank you very, very much for helping! :good: :good: :good:
Truly the power button was fault although you could hear clearly the "click".
I unsoldered and removed the power module and (by startig with JIG and rebooting via ADB) the phone works as it should. :victory:
Now I'm trying to solder a new power button......it's a bit tricky
Again, thank you very much guys!
I had the same problem, pressed the button many times, and it helped. Thank you for your suggestions

Tmo LG Leon in boot loop - No recovery, no download. Wasn't rooted -- fully stock

I've seen a few other similar threads, so apologies if you think I didn't search. But all those other threads appear to be with a rooted phone. This phone was not rooted or modified in any way. It was fully stock from T-mobile.
It belongs to my 12 year old daughter. She is not technically savvy, so I believe her when she tells me she wasn't trying to root it ("What's rooting?" she said). Here's what she said happened:
She was at a friend's house. Used the phone until the battery died, no abnormal behavior by her or the phone before the juice ran out. Went to plug it in, the greyed out battery with a loading indicator came on the screen as soon as she plugged it in, and a few seconds later, the LG boot logo appeared. It showed for approximately 10 seconds, went to black, and then started the LG boot logo again. It's been in that boot loop every since.
We have to pull the battery to turn it off. The battery and SIM card have been pulled for hours at a time. I tried the hardware keys to get to stock recovery (volume down + pwr. Wait for boot logo, release and press power while still holding volume down). Recovery will launch, but as soon as I choose the restore option, it goes back into the boot loop.
Tried the many-times-posted sequence to flash stock recovery. When I hold volume up and insert the USB, the initial screen for download mode shows up, stating to keep holding volume up until you see the download screen. After about 5 seconds or so, it starts the boot loop all over again.
Only thing out of the ordinary was applying a recently pushed update from T-Mobile.
Here's a link to a video showing the loop, the recovery mode, and download mode: https://youtu.be/eRmXqFoz5iY
Even though the phone is under warranty, T-Mobile wants $20+shipping to replace it. I'd like to try to fix it before I pay them for breaking my daughter's phone. Any help is greatly appreciated.

Lenovo TAB S8-50F stuck in boot loop

I have Lenovo TAB S8-50F that is currently stuck in a boot loop. It shows the white Lenovo and "android" text on black background boot screen for 30 to 60 seconds, then shuts off, vibrates and the screen flickers some white color and then goes back into the Lenovo and "android" text boot screen and repeats.
After some investigation on these forums and Google, I have tried the following:
Hold down Power + Volume Up + Volume Down until I see "fastboot starting...". I wait 5 - 10 minutes and it still says "fastboot starting...", nothing else. I try to connect to my Windows 8 laptop but it doesn't recognize the device.
Hold down Power + Volume Down until I see the boot screen, then let go of Power (keeping Volume Down pressed). Apparently this should boot into a Recovery menu, but nothing happens and it continues to just turn off after about a minute and boot loop
Hold down Power + Volume Up until I see the boot screen, then let go of Power (keeping Volume Up pressed). Same result as above, it still goes into boot loop.
During any of the 3 scenarios above, I can turn off the tablet by holding Power + Volume Up. Also I never saw any other messages like "EFI failed" or "No mounted drive" that other users had problems with.
Is there anyone out there that can help me restore this tablet back to functional state? I'm not sure what happened that caused this to happen.
bump
bump
bump
Your question has been answered on my thread
drop a like on all my past comments to encourage me to help you.
TAP ON THE BOX BELOW TO CONTINUE
x.ak**** said:
like all my comments above to encourage me to help you.
Okay so first of all i will let you know why a phone gets bricked-
>corrupted rom
>some system files got deleted
>rooting
>modding
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
my case
i always keep two phones with me like one for my experiments and one as a backup. In this case i'll be talking about my lyf wind 3 that got bricked.
>actually i was trying to install twrp onto that phone but first i had to root it, and due to the upgraded android security, i wasn't able to do via kingoroot so i tried i-root and it did the job but instead of kingo-superuser i got some ****ty superuser so i tried granting permission to the actual superuser and while doing so i accidentally double rooted my phone (first with i-root and then with kingoroot), which was kinda stupid, so it just deleted some system files and my phone wouldn't boot after that. It just got stuck on the boot logo.
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
Click to expand...
Click to collapse

Samsung S+ only boots to 'Download Mode' - Any guidance?

Hello,
New to the forum and all of this, so please go easy on me.
I have a Samsung Galaxy S9+ (SM-G960F).
On Thursday evening, I went to the device and it was completely dead. It wouldn't turn on and I attempted to do power key/volume down and various other button combinations I found online that would normally boot the device. Obviously, I attempted to charge the phone, but the charging light did not come on yet the phone did warm up slightly as if it was charging. After leaving it plugged in for so long, a 'Downloading... Do Not Turn Target Off' screen appeared. It also states I can restart the phone by holding volume down/power button for seven seconds. However, when I do this the phone just goes dead and doesn't boot up. After plugging in the charger again trying various buttons, I eventually end up back at the same download screen.
I've read about recovery mode, safe mode etc but I am unable to access them using the instructions I've read.
Any help would be appreciated. Ideally I'd like to be able to access my photos/videos/messages on the device and be able to use it again.
Jamfocus said:
Hello,
New to the forum and all of this, so please go easy on me.
I have a Samsung Galaxy S9+ (SM-G960F).
On Thursday evening, I went to the device and it was completely dead. It wouldn't turn on and I attempted to do power key/volume down and various other button combinations I found online that would normally boot the device. Obviously, I attempted to charge the phone, but the charging light did not come on yet the phone did warm up slightly as if it was charging. After leaving it plugged in for so long, a 'Downloading... Do Not Turn Target Off' screen appeared. It also states I can restart the phone by holding volume down/power button for seven seconds. However, when I do this the phone just goes dead and doesn't boot up. After plugging in the charger again trying various buttons, I eventually end up back at the same download screen.
I've read about recovery mode, safe mode etc but I am unable to access them using the instructions I've read.
Any help would be appreciated. Ideally I'd like to be able to access my photos/videos/messages on the device and be able to use it again.
Click to expand...
Click to collapse
-Download odin
-Download firmware for your phone
-unrar firmware file
-open odin
-flash AP , BL , CP , HOME_CSC (HOME_CSC goes on USERDATA) if you haven t formated your phone by mistake your files will be there and your phone working.

Phone not booting. Logo appears, cannot access Emui recovery, but fastboot yes

Hi everyone,
Looking for some help on my phone which is the only one I have unfortunately
So basically the Honor 9 is showing only the logo then just a black screen. One time it vibrated afterwards when pressing the volume buttons and made the camera sound. So it seems it might have booted but nothing is showing?
Phone did fall before, but worked afterwards.
I cannot access Emui recovery (when pressing volume up+power, it just shows the logo and black screen), but I can access fastboot.
If I plug it to charge, it shows the charging logo fine.
Bootloader is not unlocked. Nothing custom has been installed.
I already tried Hisuite recovery mode, but it said the device is not supported.
Any advice on what I could try? I searched the forums but couldn't figure out what to do. Any suggestion would be much appreciated.
Thank you!
bleepop said:
Hi everyone,
Looking for some help on my phone which is the only one I have unfortunately
So basically the Honor 9 is showing only the logo then just a black screen. One time it vibrated afterwards when pressing the volume buttons and made the camera sound. So it seems it might have booted but nothing is showing?
Phone did fall before, but worked afterwards.
I cannot access Emui recovery (when pressing volume up+power, it just shows the logo and black screen), but I can access fastboot.
If I plug it to charge, it shows the charging logo fine.
Bootloader is not unlocked. Nothing custom has been installed.
I already tried Hisuite recovery mode, but it said the device is not supported.
Any advice on what I could try? I searched the forums but couldn't figure out what to do. Any suggestion would be much appreciated.
Thank you!
Click to expand...
Click to collapse
Hello.
I know it is close to a year now, but just in case there is someone else out there looking to solve something like this. Just make sure to have a wifi connection through which you can download your firmware and recovery through the eRecovery panel. The downloads should be around a total of 4GB, so bear that in mind.
When you are set with your wifi access do the following (feedback will be appreciated):
- plug your phone to your computer and hold down the vol up + power button to boot into eRecovery
- in the eRecovery panel, choose to download firmware and recovery and it will launch a wifi connection
- connect to your wifi
- download the firmware and recovery accordingly
- once completed, you can proceed to update/upgrade (basically to install) it via the eRecovery
- once the upgrade/update/installations are complete, you can reboot.
- just know that everything on your device will be lost - full system and sdcard wipe will be made.
I hope you find the above helpful for you.

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