Help Please ! - Nexus 7 Q&A, Help & Troubleshooting

I flashed Cm 10.2 stable + franco 75 , clean flash , and now I keep getting com.android.phone errors and can't acces anything because that error pops up every second. Also fastboot mode doesnt work , the combination power + vol up + down doesnt work at all, keeps booting into rom. And I cant use adb because I dont have usb debugging on. Please some help.
Sent from my Ascend Y300 using Tapatalk

Mockingbird said:
I flashed Cm 10.2 stable + franco 75 , clean flash , and now I keep getting com.android.phone errors and can't acces anything because that error pops up every second. Also fastboot mode doesnt work , the combination power + vol up + down doesnt work at all, keeps booting into rom. And I cant use adb because I dont have usb debugging on. Please some help.
Sent from my Ascend Y300 using Tapatalk
Click to expand...
Click to collapse
Hi, Mockingbird...
The correct key combo, for booting directly into the bootloader is...
Press and hold VOLUME DOWN...
...whilst holding VOLUME DOWN, press POWER ON, for 5 seconds (or as long as it takes; I usually find it takes no longer than around 3 seconds).
(If, however, you're stuck in a 'bootloop' situation, press and hold both for a good 30 seconds or so... this should break you out of the 'bootloop', and 'throw' you into the bootloader.)
I'm not quite sure where and when the 'myth' arose, where you have to press all three buttons... but it's incorrect.
Normally, just two buttons are all that are required... VOL DOWN (and hold), and press POWER ON for a few seconds... and it's always worked for me.
When booted into the bootloader, you can....
Boot into your custom recovery (CWM/TWRP)... and from which you can...
...Restore a previously created Nandroid backup (hope you've made one).
...or flash a custom ROM .zip (or reflash the current one you're having problems with).
Or alternatively, from the bootloader... fastboot flash a Google factory stock image.
Hope this helps... and good luck.
Rgrds,
Ged.

Thanks for the reply but I can't boot into bootloader , it goes straight to normal booting.
Edit : I got it working to fastboot mode , seems that my volm down is a lil bit buggy.
Sent from my Ascend Y300 using Tapatalk

Related

[Q] Can't get into recovery...

For some reason I can't boot into recovery mode. Yesterday I tried to flash the PAC ROM but got stuck in the "PAC is loading" screen. I had to turn off and flash back to stock with RSD light. Now, I can't get into my recovery (TWRP 2.5.0.0). When I use adb to get to recovery I get a screen with a fallen over android with its hood open and a a red triangle with a exclamation mark in the middle. I've tried to re-flash TWRP but that doesn't change anything. I'm assuming this is some kind of error, anybody know what to do? I've also tried to use cwm but I can't get into that either.
Also, how do I not get stuck in that "PAC is loading" screen when flashing?
ImStillLearning said:
For some reason I can't boot into recovery mode. Yesterday I tried to flash the PAC ROM but got stuck in the "PAC is loading" screen. I had to turn off and flash back to stock with RSD light. Now, I can't get into my recovery (TWRP 2.5.0.0). When I use adb to get to recovery I get a screen with a fallen over android with its hood open and a a red triangle with a exclamation mark in the middle. I've tried to re-flash TWRP but that doesn't change anything. I'm assuming this is some kind of error, anybody know what to do? I've also tried to use cwm but I can't get into that either.
Also, how do I not get stuck in that "PAC is loading" screen when flashing?
Click to expand...
Click to collapse
The easiest way to get into recovery is to power down, hold all three buttons and select recovery. Try wiping data after flashing PAC. Make sure your boot loader is unlocked.
Sent from my XT907 using xda premium
Leraeniesh said:
The easiest way to get into recovery is to power down, hold all three buttons and select recovery. Try wiping data after flashing PAC. Make sure your boot loader is unlocked.
Sent from my XT907 using xda premium
Click to expand...
Click to collapse
Yup, did all of this, same result. My bootloader is unlocked.
ImStillLearning said:
Yup, did all of this, same result. My bootloader is unlocked.
Click to expand...
Click to collapse
couple of things:
1.) battery could be low, and thus unable to boot up. I would suggest plugging it in (outlet, not PC). let it sit for 15 minutes. you should see the battery charging screen. after waiting 15 minutes, try to get into recovery via power+volume up+ volume down, then select recovery
2.) doing the RSD could wipe the recovery - are you able to boot up normally into the ROM? if not, make sure you have all of the drivers installed on your PC, and re-read the installation instructions (I'm sure you already have, but sometimes going over them again might open your eyes up to something you forgot)
I'm not sure where it is, but see if you can boot into safemode (google search for it).
my only similar experience is when I tried to install a custom kernel on PAC, and nothing would display on my screen (despite me hearing notifications). I tried several times to get back into TWRP, but finally got it after pressing the three buttons, waiting about 10 seconds, pressing volume down one time, then volume up once (the pattern to get into recovery)
hope this helps.
RSD flashes your stock recovery again.
Hold volume up + down + power, wait for 5 seconds for the phone to power off.
Then hold the same, volume up + down + power to get into your menu screen, select adb fast boot and flash your recovery. (fastboot flash recovery YOUR_RECOVERY_FILE.img)
Power + Volume Down (-) = Reboot
During reboot:
Press and hold Volume Up (+) = Recovery
Press and hold Volume Down (-) = Fast Boot
Press and hold Volume Up (+) and Volume Down (-) = Boot Menu

[Q] Cant get into recovery

LG G2 Sprint
CM 11 - latest snapshot
TWRP recovery installed
So I installed an Xposed module and it screwed up my phone. My phone will boot, but once it does, it just does this weird thing and doesnt respong to touch. However the power button and power menu work, so I am able to turn it off and reboot it.
I was able to get into recovery twice, earlier today after a ton of tries. Now it's just not working. I have tried over and over and over and over again and the thing just will NOT boot recovery. It just keeps booting up, or restarting if I continue to hold down the buttons.
I decided to try ADB commands, but I dont think I have debugging enabled and my device wont show up when I ask ADB for a list of devices.
I got it to boot into recovery twice with "vol-up + vol-down + power".
After booting out of recovery to see if what I did worked, I tried to get back in and it wouldnt work after so many tries.
So I did a Google search to see if the button combination was right, and I found a guy use just "vol-down + power", which wont work for me. Worked for him though.
Any suggestions?
Use the first method to get into recovery again. Make sure you don't have a usb cable connected or it won't work.
Xposed will have created a recovery zip on your internal sd. Flash it and everything should be back to normal.
Sent from my LG-D802 using Tapatalk
Hey
Any luck?
I think I tried all possibilities - vol up + power, vol down + power, power three times, vol down/up + power several times... Still no recovery.
I have d802 20b on stock 4.4.2.
One more thing - I don't have root.
Sent from my LG-D802 using XDA Free mobile app

[Q] Bootloop, cant get into fastboot

Hi
I rooted my nexus 10 some months ago. All worked fine until yesterday. I wanted to go back to original firmware and used the WUGs nexus root toolkit to download 4.4.3 version and flash it. But afterwards the tablet doesnt boot anymore. Google logo appears and then the circle thing never goes away. I searched many threads, and all base on going into fastboot and flash again, but thats the problem. I cant get into fastboot. The usual combination (Power and vol+ and vol-) doesnt work! I tried many other combinations with different timings, longer press only vol+ and power ...., I always get to google logo after it vibrates.
Is there any other way to get into the fastboot mode ?
Can I connect it to the computer and interrupt the boot process when I switch it on via the PC?
thanks in advance
regards
Erich
Try to connect it to PC with original usb cable and run "adb devices".
If you see Nexus device, you can try "adb reboot recovery" and upload a ROM to /sdcard with "adb push" for flash it.
Hi
Thanks for your relpy.
But thats the problem, even if I could upload a file with adb, which is not working, how would I flash it if I cant get into fastboot or recovery mode ???
thanks anyway
regards
Erich
I think what patzzz is saying is that it depends on your bootloop, often is the case that when someone is in a bootloop the kernel does initiate and adb is functional. Not always but at times for sure.
So if so you can attempt
adb reboot recovery
Or
adb reboot bootloader
If the above doesn't work than you will have to continue trying to boot to bootloader manually with key presses (which I believe is power on while holding volume down)
Best of luck!
Hi
Thanks for the tip. Unfortunately it doesnt work. It made a batch file which calls adb devices and adb reboot bootloader in a loop, so it can send it to the device if it is found, but the tablet isnt regonized, tried some reboots and no luck, adb cant find it )))-:
regards
Erich
It seems a brick, but you can try using fastboot command instead of adb:
Code:
fastboot devices
fastboot reboot-bootloader
hundsmiachn said:
Hi
I rooted my nexus 10 some months ago. All worked fine until yesterday. I wanted to go back to original firmware and used the WUGs nexus root toolkit to download 4.4.3 version and flash it. But afterwards the tablet doesnt boot anymore. Google logo appears and then the circle thing never goes away. I searched many threads, and all base on going into fastboot and flash again, but thats the problem. I cant get into fastboot. The usual combination (Power and vol+ and vol-) doesnt work! I tried many other combinations with different timings, longer press only vol+ and power ...., I always get to google logo after it vibrates.
Is there any other way to get into the fastboot mode ?
Can I connect it to the computer and interrupt the boot process when I switch it on via the PC?
thanks in advance
regards
Erich
Click to expand...
Click to collapse
I suggest you do a factory reset from the stock. You have gone back to stock firmware so you should have stock recovery. I had this happen once and this work for me.
Hi
I will try it with fastboot too, maybe it works....
How can I do a factory reset without recovery mode ?
thanks
regards
Erich
hundsmiachn said:
Hi
I will try it with fastboot too, maybe it works....
How can I do a factory reset without recovery mode ?
thanks
regards
Erich
Click to expand...
Click to collapse
https://support.google.com/nexus/answer/4596836?hl=en
1.If your tablet is on, turn it off.
2.Press & hold the Power, Volume Up, and Volume Down buttons at the same time for several seconds. You'll see the word "Start" with an arrow drawn around it.
3.Press the Volume Down button twice to highlight Recovery mode.
4.Press the Power button to start Recovery mode. You'll see an image of an Android robot with a red exclamation point and the words "No command."
5.While holding down the Power button, press the Volume Up button.
6.Use the volume buttons to scroll to "Wipe data/factory reset," then press the Power button to select it.
7.Scroll down to "Yes - erase all user data," then press the Power button to select it.
>>2.Press & hold the Power, Volume Up, and Volume Down buttons at the same time for several seconds. You'll see the word "Start" with an arrow drawn around it.
Thats the problem, it doesnt work! Tried it a dozent times, only Google logo appears.....
regards
Erich
hundsmiachn said:
>>2.Press & hold the Power, Volume Up, and Volume Down buttons at the same time for several seconds. You'll see the word "Start" with an arrow drawn around it.
Thats the problem, it doesnt work! Tried it a dozent times, only Google logo appears.....
regards
Erich
Click to expand...
Click to collapse
Are your volume keys even working?
Sent from my Nexus 10 using Tapatalk
Delete

[HELP]BootLoop and cant turn off

Hey guys.. Yesterday i downloaded autorec and installed TWRP.. Today i wanted to install a custom rom.. so i read some posts and i thought that i should wipe Everything.. So i wiped even my internal storage where i had my rom .img.. then i searched on the internet and i read to shut down my phone and reboot to recovery mode.. When i did that my phone stuck in bootloop and when i try to power it down it turns itself back on.. I cant enter recovery and download mode.. PLEASE HELP FAST.. my phone is LG G2 D802
Past98 said:
Hey guys.. Yesterday i downloaded autorec and installed TWRP.. Today i wanted to install a custom rom.. so i read some posts and i thought that i should wipe Everything.. So i wiped even my internal storage where i had my rom .img.. then i searched on the internet and i read to shut down my phone and reboot to recovery mode.. When i did that my phone stuck in bootloop and when i try to power it down it turns itself back on.. I cant enter recovery and download mode.. PLEASE HELP FAST.. my phone is LG G2 D802
Click to expand...
Click to collapse
first of all - never, but never delete/wipe your internal storage...
second - and i've wrote this many times already:
to turn the device completely off
- your usb cable must be disconnected
- have the device charged for more than 50%
- press pwr button for more than 10 seconds
- at some point, LG logo will show - DO NOT LET THE PWR BUTTON OFF - KEEP IT PRESSED
- only then the device will be powered off completely with the black screen
THANK YOU!! you are awesome.. I misunderstood and i thought that i should wipe everything.. What do it do now?
Past98 said:
THANK YOU!! you are awesome.. I misunderstood and i thought that i should wipe everything.. What do it do now?
Click to expand...
Click to collapse
now you find the thread on how to transfer a rom to a device directly from twrp or adb... or how to flash KDZ stock (then reroot and go from scratch)
i've never done it because i've never messed up anything on my device (my luck) - so i don't know in details - but there are threads on this subjects...
btw one more thing i've noticed in your 1st post - you had an .img rom file
you can't flash .img in twrp - you'll need the rom .zip file...
how do i access TWRP?
search on which button combination to press to enter twrp... (but before you try the key combinations - have the device powered off completely as described above)
on my device and 20h bootloader its
- press and hold pwr button + volume down
- lg logo shows (let the buttons go for a second or less)
- quickly press and hold pwr button + volume up
that works on my device...
you probably have older bootloader (20a) so you can try
- press and hold pwr button + volume down
- lg logo shows (let the buttons go for a second or less)
- quickly press and hold pwr button + volume down again
now - if you have TWRP installed - it will show you a white screen (factory reset) with yes/or no buttons - just answer YES to all and it will boot to TWRP (you answer with volume up/down keys for selection and pwr button to confirm)
if nothing of that works - try searching for other key combos... but afaik those are the only two that exist - depending on bootloader...

Zuk Z1 Soft Brick

Dear XDA friends,
i always hoped not to be one of those guys, who f****d up their phones to the point of no return. I really screwed up this time. Well, here I'am writing you about my screw up.
I unlocked, rooted, flashed and repaired all kinds of android phones in the past years, never without problems, but I could always fix it somehow. Not so much this time.
Now I'm stuck at Bootscreen with the Zuk logo. I even have problems pinging the phone via ADB.
Sorry for my noobish question guys. Any help would be much appreciated.
triby said:
Dear XDA friends,
i always hoped not to be one of those guys, who f****d up their phones to the point of no return. I really screwed up this time. Well, here I'am writing you about my screw up.
I unlocked, rooted, flashed and repaired all kinds of android phones in the past years, never without problems, but I could always fix it somehow. Not so much this time.
Now I'm stuck at Bootscreen with the Zuk logo. I even have problems pinging the phone via ADB.
Sorry for my noobish question guys. Any help would be much appreciated.
Click to expand...
Click to collapse
I got this translated from a chinese website:
For fastboot mode:
The phone turned off; keep the connection turned off the data cable to the computer, press: [volume down key] [Power Key] waiting to enter the fastboot mode.
For recovery:
Turn off the device
Press and hold Power key
When vibrates Volume UP key + Volume Down key about 10 seconds
Release all key when Android logo appear then you will see Android System Recovery
Use Volume key to select Menu
Use Power key to Confirm
Can you enter any of these 2 modes?
Life Engineer said:
I got this translated from a chinese website:
For fastboot mode:
The phone turned off; keep the connection turned off the data cable to the computer, press: [volume down key] [Power Key] waiting to enter the fastboot mode.
For recovery:
Turn off the device
Press and hold Power key
When vibrates Volume UP key + Volume Down key about 10 seconds
Release all key when Android logo appear then you will see Android System Recovery
Use Volume key to select Menu
Use Power key to Confirm
Can you enter any of these 2 modes?
Click to expand...
Click to collapse
thank you life engineer! No luck . I'll try to send it back. Thanks again for you're help. Much appreciated!
hi xda, i am facing thesame problem with my lenovo zuk z1 phone. its on a bootloop. i can enter the recovery by pressing both up and down vol. keys, i have wiped data/factory reset and wiped cache partition and rebooted but it doesnt fix.. I tried to reboot to bootloader but is stuck on fastboot mode screen. ive tried to search a solution but none have helped. The connection between phone via usb to computer only lasts like 2 secs. during boot then it disconnects again beacuse of the bootloop. Can anyone pls. help.
rusty96379 said:
hi xda, i am facing thesame problem with my lenovo zuk z1 phone. its on a bootloop. i can enter the recovery by pressing both up and down vol. keys, i have wiped data/factory reset and wiped cache partition and rebooted but it doesnt fix.. I tried to reboot to bootloader but is stuck on fastboot mode screen. ive tried to search a solution but none have helped. The connection between phone via usb to computer only lasts like 2 secs. during boot then it disconnects again beacuse of the bootloop. Can anyone pls. help.
Click to expand...
Click to collapse
How does the bootloop look like?
crian said:
How does the bootloop look like?
Click to expand...
Click to collapse
The bootloop is just showing the ''ZUK logo'' in the middle of screen and "'powered by Android logo'' below,and the phone vibrates everytime it flashes these logos. I tried QFIL but it can only detects the unit on the first boot or first flash that is 2 secs. only from the time i press the power button, and then it disconnects and not detect the unit again. Does anyone know where can i find the scatter file , MTK ROM for zuk z1, i would like to try the SP flasher tool. Or if anyone have any idea how to solve this issue on lenovo zuk z1,pls. help.tnx
Can y get to fastboot ?
im facing the same problem after i had the stupid idea to lock the bootloader again, before that i flashed the phone successfully with the cm mod recovery and cm 13.
Has anyone found a solution to this ? or do i have to send it back ?
What i did exactly :
I locked the bootloader again and just to test it i tried flashing the recovery again , ofcourse it didn't work which was what i wanted.
Afterwards i rebootet the bootloader with sudo fastboot -i 0x2b4c reboot
now im stuck in a bootloop that i cant even stop , in other words i cant turn my phone off nor can i access the recovery or fastboot
Im feeling so stupid that i locked it again .... i will try to get into recovery after my phone ran out of battery but so far it looks quite bad...does anyone know if i will get a replacement even though it was my fault ? ( i don't need to say that it was my fault ..and the bootloader is now locked again )
UPDATE::
I found a promising thread about this problem, i will report back here if i was successful.
-> forum.cyanogenmod.org/topic/121913-after-nighty-update-to-20160212-the-zuk-is-bricked-without-salvation/
CPP11 said:
UPDATE::
I found a promising thread about this problem, i will report back here if i was successful.
-> forum.cyanogenmod.org/topic/121913-after-nighty-update-to-20160212-the-zuk-is-bricked-without-salvation/
Click to expand...
Click to collapse
pressing Vol + & Vol - the connecting the USB cable entered bootloader mode. YEAH!!!!
Need some help
And after that what to do I can get it to recovery and the fastboot mod but after that what to do my phone like this for a month now
Any solution?!
did you solve it i have exactly the same problem for a month now as well (Exactly same situation) Please help
---------- Post added at 01:20 AM ---------- Previous post was at 01:08 AM ----------
Amen Ghazy said:
And after that what to do I can get it to recovery and the fastboot mod but after that what to do my phone like this for a month now
Click to expand...
Click to collapse
did you solve it i have exactly the same problem for a month now as well (Exactly same situation) Please help
Please help , same problem
I am facing same issue too from 2 days. I didnt even try to flash custom roms or play with boot loader or recovery or anything. All of a sudden my phone entered boot loop. After two three bootloops phone is entering "12 apps optimized of 230 apps" mode, completing optimizing all apps and then failing to start apps, entering boot loop again.
Effort made so far to fix -
1) Went to recovery and cleared cache - didnt work
2) Went to recovery and did factory reset - factory reset did happen but boot loop didnt stop, I realized that factory reset happened because now its saying optimizing 120 apps instead of my 230 apps during the bootloop.
3) Went to recovery, Entered fast boot mode but not able to connect to PC. Fastboot devices is not showing anything. I made sure proper driver is installed after researching on XDA.
4) Went to recovery, Tried "Install update". Didnt install anything but browsed through folder structure and realized my data is intact
It will be great if someone can help me atleast recover my data before I handover phone to service center for fixing boot loop issue.
Same problem
crian said:
How does the bootloop look like?
Click to expand...
Click to collapse
i have same problwm what to do plz help mme
Abhishekjain31291 said:
i have same problwm what to do plz help mme
Click to expand...
Click to collapse
Explain in detail
errecez1 said:
pressing Vol + & Vol - the connecting the USB cable entered bootloader mode. YEAH!!!!
Click to expand...
Click to collapse
The link is not accessible now. Can you let me know what you have done. My phone is in a boot loop now and showing only Logo and 'powered by Android' message. It keeps turning on and off again and again.
Guys when u are in fast boot mode .. pls install Twrp ... After insatlling that press power button abd vibration comes hold volum doen+volume up button at the same time ..
Then u will be getting recovery Twrp mode .. then connect it to pc and u will see internal srorage in pc...now u have to copy any rom to the phone and install it via Twrp ... Thats all
Sorry For Re-posting Here. This is Solution
Why this is happening ?
Due to Dirty Flash from Zui or from COS/CMOD but suddenly Bootloader gets locked
May be Due to Some Custom Rom which only works with Old Bootloader ( And you are on latest 2.5 Zui QPST Flash)
Reasons are many. I also did same mistake. I flashed ZUI 2.5 using QPST then unlock bootloader using official site installed twrp after wiping cache system and data , Installed Lineage 0S JAN Build then without rebooting installed Lineage Nightly build (Latest) with Gapps After rebooting Phone goes into Restart endless loop on ZUK Logo. Blink and Vibrate .. After 1hr I figured it out but its 5am So slept.
HOW TO FIX ENDLESS REBOOT ON ZUK Logo ?
-> Identity vibrate patterns (Press Power Key I count 6- 7 Vibration pattern ) After long Vibrate immediately remove finger from power key.
->Once its Done (Phone completely off)
Download QPST and Official COS QPST from this Link https://goo.gl/InWQji OR https://goo.gl/iqrnlI (I am personally Very Thankful to D tech Terminal for posting Wonderful video on Youtube https://www.youtube.com/watch?v=4Dl6JkAVpuM
<- please install all drivers and software.->) @ankurpandeyvns Thanks bro.
Main Task is here and Lots of Patience is required and You also need to be very Blazing fast to achieve this.
-Once you download and install Qpst open Qfil
-Now press Volume Up only and connect USB (Just press POWER KEY only for 1 sec It will vibrate and connect)
-Without waiting hit Download button.
-Voila It will start flashing your phone again and Hence Your phone is now Revive..
-Once Revive You can use it to again flash custom Rom or stick to stock Rom if you want.
Keep Flashing !!!
Patience is Key here. And Don't lose hope.
:good:
EDITED:
While connecting to pc and by pressing Volume key you also need to press Power key for 1 sec or 2 sec until it gets detected. Thanks addicted777 (for tip)
rajendra0072 said:
Sorry For Re-posting Here. This is Solution
Why this is happening ?
Due to Dirty Flash from Zui or from COS/CMOD but suddenly Bootloader gets locked
May be Due to Some Custom Rom which only works with Old Bootloader ( And you are on latest 2.5 Zui QPST Flash)
Reasons are many. I also did same mistake. I flashed ZUI 2.5 using QPST then unlock bootloader using official site installed twrp after wiping cache system and data , Installed Lineage 0S JAN Build then without rebooting installed Lineage Nightly build (Latest) with Gapps After rebooting Phone goes into Restart endless loop on ZUK Logo. Blink and Vibrate .. After 1hr I figured it out but its 5am So slept.
HOW TO FIX ENDLESS REBOOT ON ZUK Logo ?
-> Identity vibrate patterns (Press Power Key I count 6- 7 Vibration pattern ) After long Vibrate immediately remove finger from power key.
->Once its Done (Phone completely off)
Download QPST and Official COS QPST from this Link https://goo.gl/InWQji OR https://goo.gl/iqrnlI (I am personally Very Thankful to D tech Terminal for posting Wonderful video on Youtube https://www.youtube.com/watch?v=4Dl6JkAVpuM
<- please install all drivers and software.->) @ankurpandeyvns Thanks bro.
Main Task is here and Lots of Patience is required and You also need to be very Blazing fast to achieve this.
-Once you download and install Qpst open Qfil
-Now press Volume Up only and connect USB (Just press only for 1 sec It will vibrate and connect)
-Without waiting hit Download button.
-Voila It will start flashing your phone again and Hence Your phone is now Revive..
-Once Revive You can use it to again flash custom Rom or stick to stock Rom if you want.
Keep Flashing !!!
Patience is Key here. And Don't lose hope.
:good:
Click to expand...
Click to collapse
I'm happy that my videos were helpful. Enjoy.
keeps vibrating showing logo again and again, neither won't turn off neither turn on till for so many hour until the charge is empty....
how to stop boot loop ??????
can you provide videos how to stop boot loop ??????

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