Hey folks, few days ago i got kind of broken Zuk Z1 phone. After fixing issue with battery i tried to reset it and these is where things got weird.
Before i go into problem itself, im new to flashing/reinstalling OS and i have never done it before. But being a developer im not stranger to command line and compiling (windows and linux) and im willing to use nuclear methods.
Phone boots up normally and it works fine (except home/fingerprint button - im planing to replace it after i fix OS issues). But i cant reset it and i cant flash/reinstall it. Going into settings and selecting reset to factory settings, reboots the phone and it just gets stuck at boot logo (the first screen you ever see - dont mistake it for OS logo). It does not constantly reboot, it just shows that screen and that is it. Enabling developer mode, choosing reboot and selecting recovery mode does the same thing. Powering it off and holding volume up,down and power does the same thing. Holding power and volume down gets me into menu but i cant reset phone from there, not even clear cache like on some tutorial i found online. My options in that menu are these:
Board test
Current test
SD Update
Restore QCN
Save Parameter
Reboot
Some info that might be useful (some are from CPU-Z):
Model Z1 (Ham)
Bootloader K9#CM_8A1690F
Cyanogen OS 12.1-YOG4PAP25I
Android 5.1.1
Kernel 3.4.0-cyanogenmod
SElinux status Enforcing
OEM Unlocking in developers mode enabled
I dont think that the phone is rooter, and i dont know how to check or if i can do it without working recovery mode. I also tried to connect it to PC using ADB but no luck there (I didnt even find working driver). Also there is no SD card slot so i guess SD Update option from that menu is useless (or is it something else?)
I could use it the way it is, but i really dont want to. so help is welcome since i have been trying to fix it for past few days.
Oh and if you need more information or anything just tell me where to look and for what (i dont mind installing additional app)
Related
I have a problem with one of my Lenovo A830 phones.
I bought it from Etotalk, so it came rooted, and with their custom version of the Lenovo Stock ROM and their custom version of CWM 5.5 installed.
I tried formatting my SD card and then doing a factory data reset from within the operating system. (I was intending to install MIUI V5 after rebooting into recovery).
However, on rebooting, the device is now caught in an infinite boot loop, and I am not able to boot into recovery mode (by holding down power and both volume keys). It loads the initial splash screen, then shows a few seconds of the Android character and some whirring cogs before rebooting.
I am able to boot into Factory mode (power and volume up) or Meta mode (power and volume down). Factory mode has a number of options, but they are all in Chinese characters, which I am unfortunately not able to read.
I did notice that my SD card seemed to be write protected when I tried to format it in my computer and to copy on the new ROM - I solved this by putting it in a different phone and reformatting it. I wonder whether the factory reset process has write protected something it shouldn't have?
Does anyone know how I might best proceed? I've been digging around on the forums, and tried a few things, but there's nothing which seems to provide a coherent solution for this problem.
I've got the latest Android SDK Tools, MTK Droid Tools 2.4.8, SP Flash Tool 3.1312, some additional ADB drivers (120827 v3.7) that I'm not sure how to install, the latest MIUI V5 ROM (3.8.16), and the latest stock Lenovo ROM (S118 from Need A ROM, just in case I need it).
Maybe different SP Flash Tools version?
I had trouble using SP Flash Tools v3.1312 with A830. Once I switched to v3.1304.0.119 I was able to flash both the original ROM and the custom MIUI one without serious issues. I'm unable to post the download link but google it.
One other thing is that when connecting the phone, it usually loads the something something Preloader driver, which is no good (even if it gives you Download OK). When attempting to flash either ROM, try pressing both the power and volume up buttons while connecting the phone (after pressing Download), only way it worked for me.
Good luck!
I managed to sort this out quite simply in the end!
On the Lenovo A830 (and presumably other Lenovo Android phones?), you enter recovery by pressing power and then pressing volume up / down together after a short pause. The short 1 - 2 second pause is important, because if you try and press them at the same time or in quick succession it doesn't seem to work.
I then installed MIUI V5 from the SD card followed by Google Apps after a reboot. In order to get MIUI to install, I had to remove the assert check at the top of the update script, because this seems to erroneously check for the A820 (even though there isn't currently a port for this device?). It's working excellently with two exceptions - I am unable to select the SD card as a storage device, and Google Play store is not searchable (it causes a Force Close).
tominglis said:
I managed to sort this out quite simply in the end!
On the Lenovo A830 (and presumably other Lenovo Android phones?), you enter recovery by pressing power and then pressing volume up / down together after a short pause. The short 1 - 2 second pause is important, because if you try and press them at the same time or in quick succession it doesn't seem to work.
I then installed MIUI V5 from the SD card followed by Google Apps after a reboot. In order to get MIUI to install, I had to remove the assert check at the top of the update script, because this seems to erroneously check for the A820 (even though there isn't currently a port for this device?). It's working excellently with two exceptions - I am unable to select the SD card as a storage device, and Google Play store is not searchable (it causes a Force Close).
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Click to collapse
Hello,
How did you manage to fix the reboot loop?I have the same problem,after a factory reset the phone just reboot like you said in first post...please help me fix it...
claudiuionel said:
Hello,
How did you manage to fix the reboot loop?I have the same problem,after a factory reset the phone just reboot like you said in first post...please help me fix it...
Click to expand...
Click to collapse
Hi I had similar "reboot loop" problem this morning after a phone factory reset.
I have no idea how I solved that but the following was the steps I tried:
1. Install the MTK6589_PdaNET_ADB_VCOM_Drivers. Skip the USB connection during setup. Start the PdaNET after setup finished.
2. Insert battery inside the phone and connect the phone with the computer by USB
In my case, the phone reboot loop once, and the lenovo screen appeared in the second restart. The phone hanged. I unplugged the cable, took out the battery, insert the battery again and start the phone normally again and it is working now.
I recommend installing the recovery rom after you have fixed the phone.
Goodluck
Hello,
I own an Android tablet KO PARA1 FULL and experiencing a strange problem. This is a chinese atm7029 quadcore tablet (16gb, 1gb ram, without bluetooth, only wifi, bu supports 3g dongle), running android 4.1.1 nad 3.4.0+ kernel, which came prerooted. After some time I've decided to install backup programs on in to make a full backup of the device for the case something would go wrong, and after some trying I descovered, that there is something like recovery for that purposes which seemed a good solution for me. I decided to install CWM, which I managed to install without problems and made some backups on my device. Everything was fine, I did some factory resets through the time, some restoring processes from my previously backup states of the device, was always able to activate CWM recovery menu through Reboot to recovery or through combination of Volume down a Power button...
Until last saturday. I was normaly surfing the internet, reading mails and afterwords I powered my tablet off (it is draining battery in sleep mode, but its another story..). After a while wanted again to write a mail, so I powered it on. In that momet seemed the screen too dirty for me and I tried to cleen it little bit throug the bootup process. Unfortunately I obvious confused the system with it and after boot it was not responding properly. I did not wait enough and after a while powered it off with power key pressed for a long time, to make a new boot.
But when I powered it on again, it stayed stuck in boot logo and did not boot at all. I've tried a copple of times to boot it again with no cuccess, stayed stuck in boot logo for more then 10 min...
Afterwards I decided to make it boot up with the help of computer. I downloaded adb and drivers and somehow managed to make it boot up. I thing I was too excited to see it boot up again, that during boot up process I desconected my device from computer...
My worries were reliesed and I thought it would be a good idea to make a restore from backup to prevent some strange behaviour, so wanted to boot into recovery, but nothing had happened. After some repeated clicks on Boot into recovery button, as well as app called rebooter with nothing happening, I decided to try it out through button combination. It has not worked as well Next try was to reset to factory settings. But when I go through the menu, I can click on reset to factory settings button, seeing warning that I will lost ma data, then I can push the button to make it happen, but nothing is happening. I see only the screen with the button, can touch it 100 times and the tablet stays on, fully funcional. making no factory reset as it done before.
I did a lot of reading and searching, but have not find answer for my problem. I flashed recovery images from my backups (using flashify, flash gordon, adb shell, terminal emulator), from all previously functional states of the device. I refleshed the CWM recovery downloaded from the internet for my chipset, which previously did the job just perfect, with no success...
I am still not able to reach recovery menu. For me it seems like the bootloader would be locked, but I did not find the answer how to unlock it without to be able to start in some recovery state to use fastboot command to unlock it.
Otherwise, my device is functional, still rooted, i can use it without any other problems. But not be able to do recovery from my backups, even do a factory reset.
How can I restore my access to recovery mode? Is it somehow possible?
Hopfully it is not too much information (tryied to follow the intructions and wrote everything I thought would be important to know about) and you will not be bothered to read all my story and pull me out of my darkness with helpfull suggestion.
Thanks a lot in advance
Steve
LG Escape running 4.1.2
here is the progression of events:
1. rooted device
2. root seemed successful and no malfunctions
3. backed up all apps and system data with Titanium backup
4. the lg escape has no way to unlock the bootloader, so I tried various other methods. one of which was entering recovery mode via terminal commands. this is basically a hard reset, and it wiped all my data
5. I restored all my apps and data from my external sd card with titanium
My best guess is this is where something went wrong
6. upon restoration it prompted me to reboot the device
7. reboot passes manufacturer logo, but resets when AT$T logo appears
8. as stated earlier, there is no way to enter recovery mode during boot.
9. there is a hard reset during boot, but mine will not work, as it requires touching buttons which do not seem to be active in my stage of the boot sequence
so, I understand this does NOT mean my phone is bricked, but I don't know how else to get it to boot back up, or what is even causing the boot loop, as I DO NOT HAVE ANY CUSTOM ROMS flashed. any help here is very appreciated!
EDIT: so I have attempted to use adb on my pc to reboot into recovery from there, but it occurred to me that while I was in recovery the first time, I never checked "usb debugging". as a result my adb console commands cant even see my device. any way to turn on usb debugging while locked in a boot loop?
also, I can get it to enter download mode. I was hoping I could just reflash the firmware to it without needing to enable usb debugging, but have no clue how to do that while locked out of the phone.
I realize this is a very specialized set of questions, but it is necessary to ask here as the most people will see it. im open to any ideas
whitechameleon said:
LG Escape running 4.1.2
here is the progression of events:
1. rooted device
2. root seemed successful and no malfunctions
3. backed up all apps and system data with Titanium backup
4. the lg escape has no way to unlock the bootloader, so I tried various other methods. one of which was entering recovery mode via terminal commands. this is basically a hard reset, and it wiped all my data
5. I restored all my apps and data from my external sd card with titanium
My best guess is this is where something went wrong
6. upon restoration it prompted me to reboot the device
7. reboot passes manufacturer logo, but resets when AT$T logo appears
8. as stated earlier, there is no way to enter recovery mode during boot.
9. there is a hard reset during boot, but mine will not work, as it requires touching buttons which do not seem to be active in my stage of the boot sequence
so, I understand this does NOT mean my phone is bricked, but I don't know how else to get it to boot back up, or what is even causing the boot loop, as I DO NOT HAVE ANY CUSTOM ROMS flashed. any help here is very appreciated!
EDIT: so I have attempted to use adb on my pc to reboot into recovery from there, but it occurred to me that while I was in recovery the first time, I never checked "usb debugging". as a result my adb console commands cant even see my device. any way to turn on usb debugging while locked in a boot loop?
also, I can get it to enter download mode. I was hoping I could just reflash the firmware to it without needing to enable usb debugging, but have no clue how to do that while locked out of the phone.
I realize this is a very specialized set of questions, but it is necessary to ask here as the most people will see it. im open to any ideas
Click to expand...
Click to collapse
i have now tried to flash the firmware while in download mode using a less than legitimately obtained lg R&D tool. however, i need V10F_00.kdz and i am facing a bit of censorship. any kind soul willing to host this file on dropbox or similar so i can download it?
Usually devices have a button combination to press when powering on to get into different modes. Maybe try searching for the button combination of your phone on Google? Try ' lg escape button recovery ' ?
J2270A said:
Usually devices have a button combination to press when powering on to get into different modes. Maybe try searching for the button combination of your phone on Google? Try ' lg escape button recovery ' ?
Click to expand...
Click to collapse
believe me i have. the only combo i can get to is download mode. there is a combo for a hard reset, but my touch buttons arent active during boot.
I have a Umidigi Crystal (2/16) and it´s not booting anymore.
How that came is a long story.:crying:
I got the phone, wanted to root it and while I was enabling usb debugging in developer options, I noticed you can root it from there as well.
I have no idea whether thats a Umidigi special or if that was seen on other phones too, basically I had a slider option to enable root access.
After a reboot, SuperSU was installed automatically, root checker, file explorer and rom toolbox worked fine with it but I actually rooted to get Xposed Installer.
That worked very well too, only did I want to have a custom recovery to prepare my phone in case of a bootloop.
So I followed these instructions.
I hadn´t unlocked the bootloader by the time and since the instructions said I would have to unlock it I did that first using these instructions.
Everything worked as expected but from this point on, on the pre-bootanimation picture my screen would say
Code:
Orange State
Your device has been unlocked and can't be trusted
Booting in 5 sec...
As everything else was the same as before, I just ignored it.
Then I moved on to installing TWRP by, again, these instructions.
The process seemed to work but after finishing, I was unable to boot into recovery mode, my phone would just boot into the normal OS(which still worked by the time).
I wanted to get around that by using this app but because of the unlocked bootloader my phone was factory reset
and I had to root again.
I was going for the same way I already did it beforehands and I was asked to reboot again.
After that point, my phone was stuck in the pre-bootanimation screen saying it´s orange state thingy again and would just stay there forever.
I tried installing the stock rom from here ((2/16 - V1.0_20171026)) to get rid of the root setting I enabled.
Now I get the pre-bootanimation screen with the orange state text again and after 5 seconds it keeps the background image but the text disappears.
Thats where it´s stuck for like 3 hours now.
When I press the power key a couple of seconds, that loop starts again, I can´t turn the phone off.
Things I can still do:
•Reboot (holding the power button, still get stuck the same way though)
•Access a PC, the internet, an SD Card and electricity
•Charge the phone
•I still have all the drivers on my PC properly installed
Things I can´t do
•Keep the phone turned completely off
•Boot into fastboot, recovery or normal OS
•Get the PC to recognize my phone (not even the adb)
What I want (if possible in that order):
•Boot into literally any OS
•Use the current OS or any custom rom
•Have root access without the developer option method
•Have TWRP
•Unlocked Bootloader
I know, I ask for a lot but this is the only phone I have right now and I badly need it.
Getting it to boot again is really the primary goal here.
Thanks so much to everyone who tries to help me, it really means a lot
I did the infamous update to Android 12 yesterday and this morning tinkering with the new settings I accidentally blocked myself out of my phone.
Before testing yourself I want to give a warning to not you bother to try this setting on, just in case the same thing happens to any of you: it was a setting called "Quickly unlock screen without password" or something like that, it was in Settings > Privacy & Security > Lock screen Password. If anyone that still has the Android 12 update installed would be so kind to share some screenshots of those steps I could tell right away which option was the one I activated, since I can't even access my phone anymore...
Don't know why, but it seems that with this option the system just tries to fill the password but it always fails and it just keeps vibrating forever and can't do anything at all. The only time it stops is after rebooting into the SIM unlock prompt, but after unlocking the SIM it starts vibrating again and can't even input my password.
After this now I'm trying to recover all my stuff from my phone before doing a factory reset, which seem inevitable at this point. I have tried to access mass storage from Recovery Menu but it doesn't seem to be recognized by my PC. I have seen that OnePlus devices have different recovery menus, this one has a menu with four options (Format data, Reboot device, Power off and Advanced) and at the bottom it says "Ver 1.2", which tapping on it twice gives a message telling to go into Download Mode, but it doesn't seem to do anything aside from rebooting.
Also tried to go into Fastboot from the recovery menu (Advanced > Reboot into Fastboot mode) but it just shuts down instantly after the Fastboot logo shows up.
So, please, could anyone give some advice here? I'm pretty much lost at this point and I don't want to factory reset right away just yet. Any help will be appreciated.
are you able to fix your phone?