Flashing another ROM turned into some bigger problem - G2 Q&A, Help & Troubleshooting

Hi guys, the times has come for me to open up my own account - I screwed up. I hope this is the right sub forum and apologize if it is not.
LG G2 Germany, formerly: TWRP recovery, Paranoid Android 5.1.1
Loved the rom but there were some issues like the screen turning off and on randomly, wouldn't accept pin right away, so I decided to go for CM 12.1.
Booted into recovery, factory wiped, tried to flash the .zip, but neither the rom nor the gapps would even begin to flash. It just said error.
Went crazy, tried some other CM versions, none of them worked. I've never had this issue before, when I flashed PA it all went just peachy.
Went even crazier and I can't really remember what I did in my panic spiral, but I somehow ended up with a soft-bricked phone. Managed to re-install the LG firmware .kdz, however, only the 4.2 one worked (4.4 gave me a bootloop.)
Now, getting this bad boy rooted and ready to flash custom roms is somewhat of a problem. I managed to get it into recovery though (after some issues with the recovery image), but flashing CM still won't work. Same error as before. I think there may be something wrong with the recovery image. I still had the image .apk from the first time I rooted my phone (also with 4.2) and it worked just fine so I figured I'd just use it again and do it like I did it last time. However, I am able to get into recovery mode. I've tried ClockworkMod and TWRP, but as a result of my panicking, it's just really a big ol' mess right now. I hope I've included all the info needed.
Please help, I'm actually lost.

Are you flashing the latest TWRP which is 2.8.7.1?
http://blastagator.ddns.net/twrp.html

Hey, thanks for replying. At the moment it only boots into recovery, unfortunately. ADB does not work, even after re-installing the usb drivers. My computer recognizes the device now though, but I can't get any files onto that thing at the moment.
Edit: It's not the latest TWRP

If you install the latest TWRP, you may be able to boot into TWRP and copy over a ROM to flash.

Related

Probably soft-bricked my N4

Hi folks,
It appears that I managed to soft-brick my device, while trying to revert everything back to stock.
To make a long story short, I'm working by efrant's guide, but once I try to flash the radio, it takes ages and doesn't really go anywhere, i'm waiting more than 20 minutes now.
In addition to the bootloader (which is unlocked and the computer recognizes), I can also access the recovery (TWRP) - BUT, when I tried to wipe all the data, it wiped stuff and then claimed that there's no OS installed. when I rebooted my device, it got stuck on google's logo and I had to force reboot into bootloader again.
Luckily, the bootloader is the only thing that currently works in this phone, whilst the recovery keeps "claiming" that there is no OS installed and i can't really do something with it.
so i try to flash the bootloader, it works. once i try to flash the radio, it gets stuck. i try to flash system.img, the same.
What do I do?
A lot of thanks in advance!
*update* - I managed to flash it back to stock, eventually. yey.
just flash any ROM and Gapps and It should work.

[Q] Boot hangs at Android sign.

Simply put, this is what happens when a rooting newbie discovers custom bootloaders and ROMs.
Current State:
A full stock ROM installed (no root) with the Skrillax V8 bootloader plopped on top of it. (which of course means the recovery-from-boot.p file still exists and that I don't have CWM.) The tablet will show the Acer logo then the Android logo and will give the appearance of booting. Then the icon flashes. It does this intermittently and forever.
What I want:
CM 10+ running with Skrillax and TWRP stably. I'd go with Flexreaper for next choice. Maybe I'll try to compile a KitKat version for it someday. Who knows.
How I managed to get my tablet in this crappy state:
Rooted tab a long while ago with a probably far outdated method.
Looked all over the internet later on how to unlock the bootloader and settled on the manual method in this excellent thread.
I flashed V8 and TWRP without a hitch using nvflash.
I wiped and installed Flexreaper.
I liked it but wanted a higher prize. I make a nandroid backup of it onto the external_sd and wiped and installed CM 10.1 from this thread.
This is where everything started going sour. It told me the install was invalid halfway. Disappointed, I wiped again and tried to restore my nandroid backup. It seemed to restore properly, but then Skrillax hung forever loading the kernel.
I wiped again and installed Flexreaper fresh. This time it booted. I downloaded the newest unofficial version of CM they mention on their wiki.
Booted to recovery and installed CM 10. It ran fine and I was impressed with the new OS. Then I noticed the apparent lack of Gapps.
I flashed the Gapps Jellybean package and rebooted. Skrillax hung.
Wiped everything I could fine in the TWRP menu and installed Flexreaper. Got past the primary kernel loading but the android icon would work for a bit then flash, starting all over again.
At this point I flashed several other recoveries, hoping it was my recovery. No such luck. I tried all of them included in V8.
Then finally, I downloaded full stock ICS and flashed it. I rebooted and noticed the same Android flashing thing.
Finally, I flashed V8 again, being the newbie I was, and then suddenly remembered while trying to boot to recovery that the Full install probably rewrote the recovery-from-boot.p.
And here I am.
Tl;dr version:
Went click-happy with ROMs, wiping, and recovery flashing until I was left with a stock OS that wouldn't boot with a Skrillax bootloader but no recovery.
The good news is, I still have cpuid+sbk, it still boots to APX (no idea how I didn't screw that up too.), and I have a nandroid backup on my external_sd which is probably untouched, since I was careful to not wipe it in TWRP.
Please help me fix this. I don't want an excuse to waste money on a flashy new Nexus or Asus Transformer tablet, I already have too many for my wallet's comfort.
I quess you renamed stock rom to update.zip and than flashed it? If you havent do it, put it on sd card and pres power+vol down (if nuttin happens than vol up). That shld trigger flashing proces
poslato sa elmag radija
uglyjohny said:
I quess you renamed stock rom to update.zip and than flashed it? If you havent do it, put it on sd card and pres power+vol down (if nuttin happens than vol up). That shld trigger flashing proces
poslato sa elmag radija
Click to expand...
Click to collapse
I don't have access to a micro sd card reader if the file must be placed on the micro SD card. I already have flashed the stock rom supposedly via TWRP, so I shouldn't have to flash it again, I wouldn't think. If I do, I guess I'll have to get a reader.
Yes. Micro sd. Rename it. You have guodes gere on xda. Im hoping it will help you.
poslato sa elmag radija
It didn't work. Still in same state as before.
I also have access to fastboot if that would help.
m27frogy said:
Simply put, this is what happens when a rooting newbie discovers custom bootloaders and ROMs.
Current State:
A full stock ROM installed (no root) with the Skrillax V8 bootloader plopped on top of it. (which of course means the recovery-from-boot.p file still exists and that I don't have CWM.) The tablet will show the Acer logo then the Android logo and will give the appearance of booting. Then the icon flashes. It does this intermittently and forever.
What I want:
CM 10+ running with Skrillax and TWRP stably. I'd go with Flexreaper for next choice. Maybe I'll try to compile a KitKat version for it someday. Who knows.
How I managed to get my tablet in this crappy state:
Rooted tab a long while ago with a probably far outdated method.
Looked all over the internet later on how to unlock the bootloader and settled on the manual method in this excellent thread.
I flashed V8 and TWRP without a hitch using nvflash.
I wiped and installed Flexreaper.
I liked it but wanted a higher prize. I make a nandroid backup of it onto the external_sd and wiped and installed CM 10.1 from this thread.
This is where everything started going sour. It told me the install was invalid halfway. Disappointed, I wiped again and tried to restore my nandroid backup. It seemed to restore properly, but then Skrillax hung forever loading the kernel.
I wiped again and installed Flexreaper fresh. This time it booted. I downloaded the newest unofficial version of CM they mention on their wiki.
Booted to recovery and installed CM 10. It ran fine and I was impressed with the new OS. Then I noticed the apparent lack of Gapps.
I flashed the Gapps Jellybean package and rebooted. Skrillax hung.
Wiped everything I could fine in the TWRP menu and installed Flexreaper. Got past the primary kernel loading but the android icon would work for a bit then flash, starting all over again.
At this point I flashed several other recoveries, hoping it was my recovery. No such luck. I tried all of them included in V8.
Then finally, I downloaded full stock ICS and flashed it. I rebooted and noticed the same Android flashing thing.
Finally, I flashed V8 again, being the newbie I was, and then suddenly remembered while trying to boot to recovery that the Full install probably rewrote the recovery-from-boot.p.
And here I am.
Tl;dr version:
Went click-happy with ROMs, wiping, and recovery flashing until I was left with a stock OS that wouldn't boot with a Skrillax bootloader but no recovery.
The good news is, I still have cpuid+sbk, it still boots to APX (no idea how I didn't screw that up too.), and I have a nandroid backup on my external_sd which is probably untouched, since I was careful to not wipe it in TWRP.
Please help me fix this. I don't want an excuse to waste money on a flashy new Nexus or Asus Transformer tablet, I already have too many for my wallet's comfort.
Click to expand...
Click to collapse
Babsector should still work - you would need t do a search for it
It seems to have worked properly, sort of. Flashing FLEXReaper results in an "Encryption failed." prompt at boot, which the button, of course, does not work. Wiping everything works except that the prompt notes "E:format_volume: make_extf4fs failed on /dev/block/mmcblk0p4" Trying to reflash V8 with TWRP with the V8.bat file fails at format. More help?
My tablet is still displaying "Encryption failed", the button still doesn't work, and I still love my a500. Help?
Anyone?
I guess I'm screwed, then.
In the end, I think my data partition failed. Formatting or wiping data fails and when installing FlexReaper, it reports /data size as -1. Unless anyone knows how to fix flash memory, I think I'm stuck.

[Q] Can't seem to flash or update from fastboot or recovery. HELP

I've never had problems like this and I've been flashing custom roms and recovery since HTC G1 days. Maybe you chaps can enlighten me a bit.
I can boot into all partitions of my device just fine, regular system, recovery, bootloader all okay. My daily rom (Vanir), however, has been getting a little bogged down lately so I'm trying to do an update.
I transferred my rom and gapps files to the sdcard and boot into twrp 2.6.3.1 to update, but lo and behold, the files are now missing. All my other files are there, just not the rom or the gapps. Not too worried yet, I'll just use the sideload method instead.
Start up sideload and watch it transfer over the new rom (MIUI at this point, and I factory reset before hand). From the cmd line I can see it going over just fine and the device seems to be accepting it as well. It gets to 100% and starts a quick error free install on the device, but when I reboot, nothing has been changed and I'm back in Vanir. Okay...I'll update the recovery and see if a new one works.
So I boot into the fastboot to update the recovery.
Code:
fastboot flash recovery openrecovery-twrp-2.7.0.0-grouper.img
Looks good, no error messages, cmd line shows it has been written, so I reboot into my new recovery, only its not new, its still twrp 2.6.3.1 and everything still doesn't work.
Long story long, I also tried installing CWM instead of TWRP -- didn't work, using adb push to move the files and that didn't work, and every time I seem to just lose the zip files after a reboot or update attempt. In fact, when I boot back into Vanir, all my regular files are there, but even though I haven't removed them none of the rom or gapps zips are anywhere. I am sure they have successfully transferred multiple times, but they never seem to make it through a boot sequence.
At this point I'm stuck, and wondering about my boot partitions being messed up. Any help you can provide is much appreciated.
Update, with new information.
I tried to do a complete wipe a la the guide that's stickied in this forum, and it's led me to a bit of new information. It seems that my bootloader is repeatedly failing to update from version 3.23 every time giving either the "InvalidState" error, or when I use older bootloaders that are supposed to work like the JWR66V bootloader mention in this post, it doesn't say "InvalidState" but still fails just the same with a blank where it would say "InvalidState".
I've also realized that none of my changes to my tablet are persisting through a boot sequence. If I download a new app, it is gone upon restarting. In fact, every time I power it up, it downloads the same 3 app updates to the device. Perhaps that can help narrow the problem down a little bit? Sounds like a data wipe is happening every time, but only for changes since I began to try to update the tablet a few days ago, all my files from before the update attempt are never removed or altered at all.
Lastly, according to Rom Manager, I have both TWRP and ClockworkMod as recovery. Actually, that makes me think it might be a boot.img issue. If anyone has any ideas at all, I am open to try any of them at this point. Thanks for reading and for your suggestions in advance!

Bootloop on Lollipop Stock

So, yesterday i tried to install Euphoria OS on my phone, but in all of a sudden, the /cache partition corrupted, i was dumb enough and deleted it via TWRP, making my phone fall into the QPST status.
After fixing it, i proceeded and reflashed KitKat, but the phone only shows 8GB instead of 16GB, so i tried to fix this by flashing TWRP, everything went well, until i upgraded to Lollipop again.
It always bootloops no matter what i do, i really need my phone with my 16GB of storage back, it isn't a Hardware failure since the QPST diagnosis didn't say anything about mobo failures.
I can mount all the partitions, i can wipe it all, i can boot into bootloader and recovery, i can do basically everything but booting the system.
Any light on this? it either happens after i flash TWRP or after i try to root it.
Im running Android 5.1.1 stock.
List of tutorials i have tried (In order): http://forum.xda-developers.com/nexus-4/general/wip-unbricking-nexus-4-using-qpst-t2208289
http://forum.xda-developers.com/nex...unbrick-n4-t2347060/post43164157#post43164157
http://forum.xda-developers.com/google-nexus-5/help/nexus-5-stuck-boot-loop-lollipop-t3098632
Don't you dare tell me to reflash the ROM again, this is the first thing i have done, i did this 20 times already and it never worked. It isn't a ROM problem. It is a partition problem somewhere.
Fixed, had to use LGNPST to reflash JB 4.4.2, then upgraded to a ZIP version of the Lollipop ROM, then flashed the stock one.
I'm having the same problem with my Nexus 4. I read also about LGNPST, but I remember something about flashing the Optimus G cache partition I believe, then manipulating one of the prop files afterwards in order to get your 16gigs back. The problem is that all of the files needed to do this flash are attached to a stupid downloader site and so its full of pop up windows and adware from what I've seen. I can't get mine to boot into system, or bootloader, or recovery, etc. The device will not finish looping for debugging to be enabled, and even trying to boot into download mode is not happening. I've tried all I know to do, especially considering fastboot and adb both utilizeusb debugging. I really am baffled. Any root kits I've tried also don't work so far. Help please.

Sm-T510 Stuck in Bootloop

Hey, I'm new here when it comes to writing forum posts, so bare with me.
I've had this tablet for a few years now and I had flashed it with one of Magendanz roms (Nexus Stock) and I wanted to change to the LineageOS rom he had. I downloaded the .zip file and copied it to my sdcard and tried to get into TWRP to flash it. I did restart to recovery in the OS and once it restarted, it's been doing a boot loop ever since. I have tried using Odin to flash the rom that way, but for some reason it'll keep doing a boot loop after it's done flashing and restart. I can try going back to the stock firmware if it's a final option to get this tablet working again, but I would love to see if I can get LineageOS to work.
DengekiMatsuko said:
I did restart to recovery in the OS and once it restarted, it's been doing a boot loop ever since.
Click to expand...
Click to collapse
I had a similar issue once. It turned out that after flashing, not all the partitions mounted properly.
Are you still using TWRP? Boot to recovery, and go into "Mount". Make sure the system and other partitions are actually ticked. That solved the problem for me, and I was able to successfully boot to the system.
Hopefully your issue is that simple!
I managed to brick my Tab A 10.1 (2019) last year by dirty flashing ROMs I shouldn't have. I properly munted it, I couldn't even get into recovery. But I could still get into download mode with a USB cable plugged in to my laptop (it needed to be plugged in for download mode to come up). I flashed the stock ROM, which made it bootable again, which then allowed me to re-flash TWRP and then Magendanz' LOS18.1 ROM.
If you completely break your tablet, reflashing the latest stock ROM for your region is a great way to get back to a familiar starting point. You can then follow people's guides online to get where you want to be.

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