Database Develop

[Q] Bootloop hell

I apologize in advance if this same issue has been replied to elsewhere. I'm in kind of a unique situation and couldn't find an answer anywhere.
I'm got an N1 with 2.3.6 stock ROM, rooted. Recently I downloaded Titanium Backup PRO and while attempting to integrate dalvik cache to ROM, my phone rebooted into a bootloop. I'm assuming this is a bootloop. I get the colorful splash screen, it freezes for a second of two, then continues on, and on, and on....
Is there a way to get me out of this loopwithout having to wipe all my data, so I can backup all my stuff before I flash a custom ROM?
Everything I see about bootloops, mentions unlocking the bootloader and wiping all your data. I've seen downgrading using PASSIMG and loading stock rom. I'd really just like a simple way to get out of this loop hell and get my phone back up. It's in teh ship now getting it's power button fixed.
Thanks in advance

first thing i do on bootloops is pull battery
if no go pull battery and then pwr on by pressing pwr and trackball at same time--you can then get to recovery and maybe wipe dalvik and cache and reboot
i have never used TB for anything other than backup/restores, so can't help with dalvik integration

You might be able to fix it by wiping your cache from recovery.
Sent from my Nexus One using xda premium

Thanks for the advice! I'll give it a try as soon as I get my phone back from being fixed.

Hey guys, I hope you can help. I got my phone back with new power button, Yay! When I try to boot into recovery, teh Nexus X logo comes on for a moment and then I get a white triangle with an orange exclamation point. Do I need to use ADB to try and go to recovery and wipe my cache? I've never installed a recovery image. Do I need to do that or should there be a stock image already on my phone? Am I SOL?

One more thing that might help. I notice that when I go into HBOOT, the phone searching for 4 images from my SD card and can't find them. They go by too fast to write them all down but I think some are PASSIMG, PASSDIAG, etc. Again, do I need to load a recovery like clockworkmod on my phone first and then go into recovery to attempt to wipe my cache?

I get the same passimg all the time--no problem
If your phone came back from repair, you are probably unrooted and hence the triangle. At least that is the way I remember it, but has been two years since I rooted
If that is comfirmed by someone else, you wil need to reroot and install a recovery
A good time, if you haven't, to install android sdk and root/install recovery the right way and have full adb/fastboot features
there other ways I am not familiar with
does the lock show unlocked on the screen, they could have relocked bootloader
the wiki has the instructions, just have to navigate to the htc smartphones and N1

jus to make sure that if u still got root. install su checker app from play store and confirm.
if not root using SUPER ONE CLICK ROOT.
flash recovery (4EXT is good) www.4ext.net
do a backup and then flash the rom u want
Sent from my Nexus One using Tapatalk

Thanks I'll check. I only had teh power button fixed and not by HTC so I doubt they unrooted it. I'm still in a bootloop but I can use superoneclick still, so I'll give that a try.

so what I'm trying to do is wipe my cache without wiping my data. I don't think my bootloader is unlocked. Am I screwed?I'm in a bootloop, so I can 't install anything to the phone. I probably could put a recovery image on the SD card, but if my bootloader is locked, I'm guessing that won't work. I'm rooted. When I go to HBOOT, the phone looks for passim files and doesn't find them, then when I choose recovery I get the white triangle. I've try to flash a recovery image through ADB but I get an error, failed to load image. Again, is that a bootloader issue?
I'm almost at the point of just wiping my data and hoping I can get it all back somehow.

holtonhj said:
so what I'm trying to do is wipe my cache without wiping my data. I don't think my bootloader is unlocked. Am I screwed?I'm in a bootloop, so I can 't install anything to the phone. I probably could put a recovery image on the SD card, but if my bootloader is locked, I'm guessing that won't work. I'm rooted. When I go to HBOOT, the phone looks for passim files and doesn't find them, then when I choose recovery I get the white triangle. I've try to flash a recovery image through ADB but I get an error, failed to load image. Again, is that a bootloader issue?
I'm almost at the point of just wiping my data and hoping I can get it all back somehow.
Click to expand...
Click to collapse
You really know nothing huh. The triangle is the recovery. Press power button and volume up at the same time, it will the show you some options like wipe cache.

n1newbie said:
jus to make sure that if u still got root. install su checker app from play store and confirm.
if not root using SUPER ONE CLICK ROOT.
flash recovery (4EXT is good) www.4ext.net
do a backup and then flash the rom u want
Sent from my Nexus One using Tapatalk
Click to expand...
Click to collapse
Did you miss the "stuck in boot loop" part?

sorry,
meant that the triangle is your stock recovery--
you install recovery thru fastboot not adb
i would still, if you haven't, install android sdk on pc-unlock bootloader (fastboot oem unlock) and fastboot recovery--all in wiki
i think it was mentioned--holding down pwr and tb will get you into fastboot mode--phone connected and usb debugging selected on phone
you'll just have more flexibility with flashing roms etc and getting out of trouble

Recovery wont boot

Hey everyone, I installed recovery on my phone and it worked fine but after doing so I tried to install a ROM. This ended up with my phone being bricked and so I flashed the original FTF file and now it works fine again. I rooted the phone after this and installed recovery and it said it installed properly with no errors. I then tried to boot my phone in to recovery by pressing either volume key when the green led shows up with the sony splash screen but nothing happens. I've tried it loads of times using both up and down volume keys but it does not go to recovery anymore. Any help?

nathjr said:
Hey everyone, I installed recovery on my phone and it worked fine but after doing so I tried to install a ROM. This ended up with my phone being bricked and so I flashed the original FTF file and now it works fine again. I rooted the phone after this and installed recovery and it said it installed properly with no errors. I then tried to boot my phone in to recovery by pressing either volume key when the green led shows up with the sony splash screen but nothing happens. I've tried it loads of times using both up and down volume keys but it does not go to recovery anymore. Any help?
Click to expand...
Click to collapse
sorry but what recovery are you using

TWRP/CWM I've tried both of them neither of them boot up the phone just boots up as normal even if I press the volume keys. I've installed the CWM for locked bootloader now though and it still wont work, that being the case my phone is a locked bootloader.

what device are you using and which recovery?
i rmb ZL has issues with CWM recovery like this.
Z, havent encounter any yet.
If you cant boot into recovery then try installing it again.

nathjr said:
TWRP/CWM I've tried both of them neither of them boot up the phone just boots up as normal even if I press the volume keys. I've installed the CWM for locked bootloader now though and it still wont work, that being the case my phone is a locked bootloader.
Click to expand...
Click to collapse
have you got superuser/super su installed and working ? when flashing recovery supersu asks for ADB approval

Well it would be an Xperia Z being in this category of the forum? But Ive tried re-installing and removing completely and installing again. Each time it seems to install correctly but even if the green led comes on at start up it wont boot in to the recovery mode

I even tried using XZRecovery to install it on the phone itself but that didnt let me boot in either

have you got superuser/super su installed and working ? when flashing recovery supersu asks for ADB approval

Maddhouse said:
have you got superuser/super su installed and working ? when flashing recovery supersu asks for ADB approval
Click to expand...
Click to collapse
Yeah sorry for not answering previously I do have it installed but as I said, I gave XZRecovery su permissions and it installed TWRP recovery then I rebooted but this didnt work either. I just tried Recovery Reboot from play store and it just gives my phone a normal reboot

nathjr said:
Yeah sorry for not answering previously I do have it installed but as I said, I gave XZRecovery su permissions and it installed TWRP recovery then I rebooted but this didnt work either. I just tried Recovery Reboot from play store and it just gives my phone a normal reboot
Click to expand...
Click to collapse
Okay try installing this one dont know of anyone which this hasnt work for, before go into supersu and look at app's, has ADB got a green or red hash

I tried that one before and it didn't work. Just checked my superuser and it seems it doesn't even have ADB listed, just some rooted apps I've used. I tried setting it to always allow in preferences but that didn't change anything.
Sent from my C6603 using xda premium

do this
1-flash "another" ftf file
2-repair it with sony update service
3-go to settings > backup and reset > factory data reset (internal wipe)
4-root
5-install CWM
do not try to restore your previous rom or whatever. especially when youre jumping from one rom to another.
Start fresh.

This will probably work but I used the unbranded ftf file on a clean install so im not sure how much differentit'll be
Sent from my C6603 using xda premium

LitoNi said:
do this
1-flash "another" ftf file
2-repair it with sony update service
3-go to settings > backup and reset > factory data reset (internal wipe)
4-root
5-install CWM
do not try to restore your previous rom or whatever. especially when youre jumping from one rom to another.
Start fresh.
Click to expand...
Click to collapse
I tried to do this but when I connect my phone to a pc nothing comes up, no pop-up, nothing on the phone, it doesnt even charge. It does charge however when I put it in a plug socket.. I think this could have something to do with it in the first place, my problem still isnt resolved what else can I do?

Are you stuck at step 1?
Try the newest flashtool (I think people are having issues with it, but worth a try) or the v4 flashtool.
And try another ftf file, don't use the same one that you used, or trying to use.

[Q] Soft/Hard Bricked, Lost Root, Lost Recovery, USB Not Recognized

Hi all, this is a last ditched effort at maybe saving my phone. I did an update on my SU and for some unknown reason it rebooted my phone. It then loaded up my rom until the kernel settings loaded then rebooted once again. I then tried to go into recovery to flash a backup and it booted me straight into my unlocked fastboot. I then tried to reboot once again in hopes I could fast navigate into twrp through rom manager, once in I was prompted that I no longer had root. I then decided to start over from scratch and load a recovery in fastboot. Once I had everything good to go I plugged everything in and instead of recognizing my phone as a drive, HTC manager popped up instead. I then updated my drivers to see if maybe that would fix the problem with no luck. I am at a loss at this point. I would greatly appreciate any help you guys can offer.

grimzen said:
Hi all, this is a last ditched effort at maybe saving my phone. I did an update on my SU and for some unknown reason it rebooted my phone. It then loaded up my rom until the kernel settings loaded then rebooted once again. This is completely normal, you should have just rebooted the phone and been done I then tried to go into recovery to flash a backup and it booted me straight into my unlocked fastboot. Again totally normal, thats the bootloader use the vol to move down and choose recovery and hit power this will boot you to TWRP I then tried to reboot once again in hopes I could fast navigate into twrp through rom manager, once in I was prompted that I no longer had root. I then decided to start over from scratch and load a recovery in fastboot. Why ? Once I had everything good to go I plugged everything in and instead of recognizing my phone as a drive, HTC manager popped up instead. You should not have Sync installed only the drivers I then updated my drivers to see if maybe that would fix the problem with no luck. I am at a loss at this point. I would greatly appreciate any help you guys can offer.
Click to expand...
Click to collapse
Is the whole point of this just to install SuperSU ?
does your phone still boot up ? at one point you mention using rom manager ?

clsA said:
Is the whole point of this just to install SuperSU ?
does your phone still boot up ? at one point you mention using rom manager ?
Click to expand...
Click to collapse
I was doing a SU update. It restarted into a loop that boots about 1 min after the splash screen then resets. I've tried to redownload root through SU app as I can no longer connect through usb but it reboots to soon. I used Rom Manager to try and get into recovery as a second alternative.

grimzen said:
I was doing a SU update. It restarted into a loop that boots about 1 min after the splash screen then resets. I've tried to redownload root through SU app as I can no longer connect through usb but it reboots to soon. I used Rom Manager to try and get into recovery as a second alternative.
Click to expand...
Click to collapse
http://download.chainfire.eu/372/SuperSU/UPDATE-SuperSU-v1.86.zip
flash in recovery
use adb push UPDATE-SuperSU-v1.86.zip /data/media/0
to get the file on the phone
Reboot to bootloader / fastboot USB
and from command line on pc
fastboot erase cache
fastboot reboot

I cant understand why people using those ROm manager apps to install stuff. And you said it rebooted after you update your SU. Then i tink you pressed reboot into recovery instead of NORMAL. Am i wrong?

clsA said:
Is the whole point of this just to install SuperSU ?
does your phone still boot up ? at one point you mention using rom manager ?
Click to expand...
Click to collapse
bihslk said:
I cant understand why people using those ROm manager apps to install stuff. And you said it rebooted after you update your SU. Then i tink you pressed reboot into recovery instead of NORMAL. Am i wrong?
Click to expand...
Click to collapse
I no longer have a recovery to be able to flash anything. When I try to load into recovery it just boots right back into fastboot. I was just using rom manager to boot into recovery after I couldn't get into recovery through fastboot, not to flash anything. I was updating Super Su through the actual app itself. it seemed to be downloading something when it rebooted itself and I lost root, recovery and the ability to connect to my computer.

grimzen said:
I no longer have a recovery to be able to flash anything. When I try to load into recovery it just boots right back into fastboot. I was just using rom manager to boot into recovery after I couldn't get into recovery through fastboot, not to flash anything. I was updating Super Su through the actual app itself. it seemed to be downloading something when it rebooted itself and I lost root, recovery and the ability to connect to my computer.
Click to expand...
Click to collapse
I have updated SuperSU many times and never got any problem so there is something you did. Are you on custom or stock rom?
Are you s-off / unlocked bootloader?

bihslk said:
I have updated SuperSU many times and never got any problem so there is something you did. Are you on custom or stock rom?
Are you s-off / unlocked bootloader?
Click to expand...
Click to collapse
My bootloader is unlocked and i'm running Viperrom. I've never gone through the process of s-off but for some reason it says it at the top of my fastboot screen...not sure if that's normal or not.

grimzen said:
My bootloader is unlocked and i'm running Viperrom. I've never gone through the process of s-off but for some reason it says it at the top of my fastboot screen...not sure if that's normal or not.
Click to expand...
Click to collapse
Ok. I think you need to reflash recovery again.
Boot into bootloader and fastboot usb
then download TWRP recovery from here http://techerrata.com/browse/twrp2/m7 and pick 2.6.3.3-m7.img
put it into your fastboot folder and flash it "fastboot flash recovery openrecovery-twrp-2.6.3.3-m7.img and hit enter
now try to reboot into recovery. When there Wipe Dalvik and Cache and reboot. If recovery ask you to root your device then accept it and reboot.
Remember to connect phone to right USB port not 3.0. Use 2.0 port and try annother cable also.

bihslk said:
Ok. I think you need to reflash recovery again.
Boot into bootloader and fastboot usb
then download TWRP recovery from here http://techerrata.com/browse/twrp2/m7 and pick 2.6.3.3-m7.img
put it into your fastboot folder and flash it "fastboot flash recovery openrecovery-twrp-2.6.3.3-m7.img and hit enter
now try to reboot into recovery. When there Wipe Dalvik and Cache and reboot. If recovery ask you to root your device then accept it and reboot.
Remember to connect phone to right USB port not 3.0. Use 2.0 port and try annother cable also.
Click to expand...
Click to collapse
I've tried a few different cords and all 3 ports I have still nothing but the HTC manager thing. It will recognize it but only for a split second while booting up but it says HTC BUTTERFLY as the drive and i'm not sure if that's a problem or not but it won't recognize it at all through fastboot.

you cant boot up. if it doesnt recognize it in bootloader mode then i dont know.
Try restart PC. Maybe you have several adb at same time. Adn uninstall htc sync if not but keep drivers

bihslk said:
you cant boot up. if it doesnt recognize it in bootloader mode then i dont know.
Try restart PC. Maybe you have several adb at same time. Adn uninstall htc sync if not but keep drivers
Click to expand...
Click to collapse
Ok will try that now. thanks so much for the help.

I hadthe same problem after flashing a kernel. I repeatedly tried the bootloader (audiodown key + power button) until it started. Recovery was not available, in the red triangle screen press audio up key,got the system recovery screen, wipe cache, reboot the system and then try installing Twrp recovery. It worked.
Sent from my HTC One using xda app-developers app

jpaulpra said:
I hadthe same problem after flashing a kernel. I repeatedly tried the bootloader (audiodown key + power button) until it started. Recovery was not available, in the red triangle screen press audio up key,got the system recovery screen, wipe cache, reboot the system and then try installing Twrp recovery. It worked.
Sent from my HTC One using xda app-developers app
Click to expand...
Click to collapse
I'm not familiar with the red triangle screen is there a way to boot into it?

Grizmen what are you talking about. Why should you boot into red triangle? There is no menu called red triangle. Only on stock recovery.
Sent from my HTC One using Tapatalk

grimzen said:
I'm not familiar with the red triangle screen is there a way to boot into it?
Click to expand...
Click to collapse
bihslk said:
Grizmen what are you talking about. Why should you boot into red triangle? There is no menu called red triangle. Only on stock recovery.
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
I think @jpaulpra was telling him to reflash stock recovery
then boot to it and do clear cache.. then reflash twrp

When I got into bootloader, I lost the Twrp recovery. So when I selected recovery I got the screen with a "triangle and exclamation mark". If you leave it will reboot the system after couple of minutes. But if the audio up key is pressed, it will show a system recovery screen, where cache can be wiped
Sent from my LT26i using Tapatalk

bihslk said:
Grizmen what are you talking about. Why should you boot into red triangle? There is no menu called red triangle. Only on stock recovery.
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
Basically all I'm trying to do now it's find a way to get my computer to recognize my phone as a drive. When I go into viper settings and go to advance menu (with the short time I have before boot loop) there is an option to mount drive. When I select the option to do so it hands on splash screen and I have to hold power button to recycle back on. Once back in it's no longer selected. I've never seen a boot loop go pay the flash screen. Is this normal?

Pretty SOL with my son's Nabi2
I'm having a issue with my sons Nabi2 pretty similar. I messed up bigtime guys I rooted it and started messing aroung with the system files. Then didn't get a boot afterwards, wiped everything from twrps system, data, the whole shabang! Even lost my root! and access to on board flash cause I've been trying to recover using twrp with absolutley no luck. I still have the original stock unrooted backup saved to my pc from when I first installed twrp. Can someone please help me? I'm really out here trying to reach out for some help. didn't even know where to post this. Thank you guys. Note to moderators: If this is the wrong place to post this then please point me to the right direction and I apologize.

[Q] My SP is now a brick. Help please!

Hi! After reading a lot of post on the Internet, I decided to install CM11. I root the SP with TowelRoot, installed CWM and create a back up, then I wipe cache, dalvick cache, and I wipe data. Everything was working fine. Now, I install CM11 from a zip, and then Google Apps, no errors were shown. I reboot the phone, and here was the problem, it shut down, but never turn on again. Even if i push the on button, it doesn't do anything. If i push vol down while I push the turn on button, i get a green light for a second, but nothing new happens. I f I do the same, but pushing vol up button, i get a blue light.
Please, Could you help me to get my phone working again?

Ivan_0013 said:
Hi! After reading a lot of post on the Internet, I decided to install CM11. I root the SP with TowelRoot, installed CWM and create a back up, then I wipe cache, dalvick cache, and I wipe data. Everything was working fine. Now, I install CM11 from a zip, and then Google Apps, no errors were shown. I reboot the phone, and here was the problem, it shut down, but never turn on again. Even if i push the on button, it doesn't do anything. If i push vol down while I push the turn on button, i get a green light for a second, but nothing new happens. I f I do the same, but pushing vol up button, i get a blue light.
Please, Could you help me to get my phone working again?
Click to expand...
Click to collapse
The ROM you flashed isn't working then. If it shows a bootlogo it means that it doesnt work but if it doesnt then it means you haven't UNLOCK you bootloader which stops installation of CM ROMs. Read the guide I created here to recover: http://forum.xda-developers.com/xperia-sp/general/root-ultimate-noobs-guide-to-rooting-t2845520

Furrydaus said:
The ROM you flashed isn't working then. If it shows a bootlogo it means that it doesnt work but if it doesnt then it means you haven't UNLOCK you bootloader which stops installation of CM ROMs. Read the guide I created here to recover: http://forum.xda-developers.com/xperia-sp/general/root-ultimate-noobs-guide-to-rooting-t2845520
Click to expand...
Click to collapse
Thank for the answer, I'm gonna check the guide. No logo is shown on the screen, it is completely black. My bootloader was unlocked.

i had the same problem once, try to flash a stock ftf rom with pc companion.. keep calm and you will fix it
edit.. not with pc companion with flash tool you do it..

Ivan_0013 said:
Thank for the answer, I'm gonna check the guide. No logo is shown on the screen, it is completely black. My bootloader was unlocked.
Click to expand...
Click to collapse
have you tried flashing boot img with fastboot if not try that it might help

Ivan_0013 said:
Hi! After reading a lot of post on the Internet, I decided to install CM11. I root the SP with TowelRoot, installed CWM and create a back up, then I wipe cache, dalvick cache, and I wipe data. Everything was working fine. Now, I install CM11 from a zip, and then Google Apps, no errors were shown. I reboot the phone, and here was the problem, it shut down, but never turn on again. Even if i push the on button, it doesn't do anything. If i push vol down while I push the turn on button, i get a green light for a second, but nothing new happens. I f I do the same, but pushing vol up button, i get a blue light.
Please, Could you help me to get my phone working again?
Click to expand...
Click to collapse
the good news is: you're able to see thr green & blue light, you can flash stock rom via flashtool, but you'll lose all data

Problem solved
Thank you all for your help, finally I could solved the problem flashing the stock rom with FlashTool

There you go.
Unless you're having hardware issues, there's no such thing as a fully bricked Xperia SP.

Hey,I would like to get back to stock.
Rom:Crystal pa 4.4.4
Bootloader;Unlocked
Kernel:The one that came with the rom.
Device:Xperia Sp C5302
Can I directly flash the update via pc companion/or do I need to use flashtool to decrypt the files?
A detailed explanation would be appreciated.Please reply ASAP.
Thanks!

Check the link
xperiaSP1995 said:
Hey,I would like to get back to stock.
Rom:Crystal pa 4.4.4
Bootloader;Unlocked
Kernel:The one that came with the rom.
Device:Xperia Sp C5302
Can I directly flash the update via pc companion/or do I need to use flashtool to decrypt the files?
A detailed explanation would be appreciated.Please reply ASAP.
Thanks!
Click to expand...
Click to collapse
You have a detailed explanation in the reply that Furrydaus made to me, at the top of the post. If you follow his guide, you will see that reparing your xperia is quite easy

Ivan_0013 said:
You have a detailed explanation in the reply that Furrydaus made to me, at the top of the post. If you follow his guide, you will see that reparing your xperia is quite easy
Click to expand...
Click to collapse
Haha yes. Thanks for the compliments!
Sent from my Xperia SP using XDA Premium 4 mobile app

stuck on bootloop
I did the following and now phone is just stuck in bootloop , Any and all help is welcome, just help
Unlocked the bootloader succesfully using fastboot
flashed cm11 boot.img using fastboot
installed cm11 using adb sideload
After all this, my phone got stuck in boot animation (arrow circling a head)
I was able to reboot in recovery and wipe cache, wipe dalvik cache but when trying to wipe data/ factory reset and got an error mounting message and skipped formatting.
Then i tried reflashing the zip as well reflashing the boot.img file.
Thankyou for reading and replying.

flash a new boot.img
defy313 said:
I did the following and now phone is just stuck in bootloop , Any and all help is welcome, just help
Unlocked the bootloader succesfully using fastboot
flashed cm11 boot.img using fastboot
installed cm11 using adb sideload
After all this, my phone got stuck in boot animation (arrow circling a head)
I was able to reboot in recovery and wipe cache, wipe dalvik cache but when trying to wipe data/ factory reset and got an error mounting message and skipped formatting.
Then i tried reflashing the zip as well reflashing the boot.img file.
Thankyou for reading and replying.
Click to expand...
Click to collapse
I got a similar error last week. To solve it, i put the phone in fastboot mode. Then, i flash the boot.img from cm11(at least, I think that was that) using flashtool. Doing this i finish the bootloop. Then i flashed the stock rom again, and all problems were solved.

[Q] Device does not boot after twrp 2.8.5.0 update - Stuck at CM Logo

Hello everybody,
I am having severe trouble with my HTC one mini 2: After an update to TWRP 2.8.5.0 the phone gets stuck at the CM12 logo.
After I got the phone, I installed CM 12 with TWRP 2.7.1.0. Everything was working fine, besides the well known problem that TWRP freezes from time to time.
Yesterday I wanted to update to TWRP 2.8.5.0. I performed the recovery flash and everything seemed to work fine. Also I erased the cache. I used the following commands:
fastboot erase cache
fastboot flash recovery recovery-twrp-2.8.5.0.img
After that, I wanted to reboot my phone. Unfortunately, this did not work out at all. My phone does neither boot to CM12 nor to recovery. It does not react to the Power button. I can restart it by holding POWER + VOL UP but the phone gets stuck at the CM logo and will not move further. Also, I can not boot to recovery.
Also, the phone is not available via adb/fastboot. adb/fastboot does not show any attached devices. Adb/fastboot can only detect the phone, when the phone was running out of battery and is attached to the PC but not yet turned on. In this case, adb/fastboot detect the device, but mark it as "unauthorized" so that i can not connect to it.
I am kind of desperate. I hope somebody con help me with this issue.
Thanks in advance.
Cheers,
braumeister

hey guys,
does anybody have an idea what to do about this problem?
Is there any way, I can flash a new stock rom to the device via the SD-card?
Cheers,
braumeister

braumeister84 said:
hey guys,
does anybody have an idea what to do about this problem?
Is there any way, I can flash a new stock rom to the device via the SD-card?
Cheers,
braumeister
Click to expand...
Click to collapse
CM its very buggy and it sucks.
install previous version of TWRP and revert to stock.
Stock
TWRP
fastboot only works in bootloader mode
abd only works with system connected to PC

kativiti said:
CM its very buggy and it sucks.
install previous version of TWRP and revert to stock.
fastboot only works in bootloader mode
abd only works with system connected to PC
Click to expand...
Click to collapse
THX for your help.
Unfortunately I can not install another TWRP version as I can access my phone neither via adb nor via fastboot.
Both, "adb devices" as well as "fastboot devices" do not recognize my phone. Also I can not access recovery. I tried "POWER+VOL UP/DOWN" but it did not work.

Same problem
HEy guys,
like braumeister said... I have exactly the same problem.
Is anyone here able to help us? That would be great!

@fleischball
You are probably on a bootloop. A soft brick. It happens when you dirty flash ROMs.
The simplest solution is
- wipe dalvic cache/cache via your recovery
If this doesn't work
- wipe cache + dalvic cache + data + android secure.
- reflash your ROM
- again wipe dalvic cache + cache
- reboot
This method is called clean flash.
Hope this would be helpful for you.

hitman-xda said:
@fleischball
You are probably on a bootloop. A soft brick. It happens when you dirty flash ROMs.
The simplest solution is
- wipe dalvic cache/cache via your recovery
If this doesn't work
- wipe cache + dalvic cache + data + android secure.
- reflash your ROM
- again wipe dalvic cache + cache
- reboot
This method is called clean flash.
Hope this would be helpful for you.
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Thanks, Hitman. But this wont work at first try because - like braumeister already described - we are not able to get into recovery or bootloader:
After I got the phone, I installed CM 12 with TWRP 2.7.1.0. Everything was working fine, besides the well known problem that TWRP freezes from time to time.
Yesterday I wanted to update to TWRP 2.8.5.0. I performed the recovery flash and everything seemed to work fine. Also I erased the cache. I used the following commands:
fastboot erase cache
fastboot flash recovery recovery-twrp-2.8.5.0.img
After that, I wanted to reboot my phone. Unfortunately, this did not work out at all. My phone does neither boot to CM12 nor to recovery. It does not react to the Power button. I can restart it by holding POWER + VOL UP but the phone gets stuck at the CM logo and will not move further. Also, I can not boot to recovery.
Also, the phone is not available via adb/fastboot. adb/fastboot does not show any attached devices. Adb/fastboot can only detect the phone, when the phone was running out of battery and is attached to the PC but not yet turned on. In this case, adb/fastboot detect the device, but mark it as "unauthorized" so that i can not connect to it.
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After you reboot with pwr+vol up you have to hold pwr+vol down exactly when the phone reboots to enter bootloader.

doiutzu said:
After you reboot with pwr+vol up you have to hold pwr+vol down exactly when the phone reboots to enter bootloader.
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THATS IT!!!! Thanks!!!!!!