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N7 Grouper stuck in bootloop when flashing custom ROMs after factory image reset

I would welcome any help here. I have a Grouper N7 that until recently was running the XenonHD rom on the 4.13 bootloader. Due to travel that I was on I encrypted the tablet, but now that those circumstances are not happening anymore, I upgraded the bootloader to 4.23 and then flashed the JWR66V factory stock image. One all that was done I rooted and installed TWRP 2.6.3.1. I have tried SmoothROM, ButteredGrouper and Slim (all 4.3.3 roms) and while everything seemed to flash properly, all of them get stuck in the animation while booting. I even tried downgrading the bootloader and reflashed the last official version of XenonHD and still got the same results. So far, the only way I have been able to get the tablet to boot all the way up is to flash the stock image, and that is just not good enough...
Any ideas on what I am missing?

When going from ROM to ROM you need to do a factory reset in your custom recovery prior to flashing the ROM
Sent from my Nexus 5

Pirateghost said:
When going from ROM to ROM you need to do a factory reset in your custom recovery prior to flashing the ROM
Sent from my Nexus 5
Click to expand...
Click to collapse
I did. Same results. I also just sat the tablet down for an hour and walked away from it. No joy.

Pirateghost said:
When going from ROM to ROM you need to do a factory reset in your custom recovery prior to flashing the ROM
Sent from my Nexus 5
Click to expand...
Click to collapse
Well, I feel stupid. I just tried downgrading TWRP to 2.6.3 and that fixed the issue. I guess I never realized that 2.6.3.1 had issues since I haven't flashed a new ROM in a while... Geez.

Delete
---------- Post added at 11:50 PM ---------- Previous post was at 11:49 PM ----------
GadgetFreak said:
Well, I feel stupid. I just tried downgrading TWRP to 2.6.3 and that fixed the issue. I guess I never realized that 2.6.3.1 had issues since I haven't flashed a new ROM in a while... Geez.
Click to expand...
Click to collapse
I have been fighting with mine too, I wonder if it's the same issue.
What's the easiest way to downgrade twrp?
Sent from my HTC6500LVW using Tapatalk
Sent from my HTC6500LVW using Tapatalk

dspcap said:
Delete
---------- Post added at 11:50 PM ---------- Previous post was at 11:49 PM ----------
I have been fighting with mine too, I wonder if it's the same issue.
What's the easiest way to downgrade twrp?
Sent from my HTC6500LVW using Tapatalk
Sent from my HTC6500LVW using Tapatalk
Click to expand...
Click to collapse
Go here and download the 2.6.3 image for your device and place it in the root SDcard, and, then install Flashify from the market. Open Flashify and flash the image...

GadgetFreak said:
Go here and download the 2.6.3 image for your device and place it in the root SDcard, and, then install Flashify from the market. Open Flashify and flash the image...
Click to expand...
Click to collapse
That was very simple, thanks
---------- Post added at 01:57 PM ---------- Previous post was at 01:53 PM ----------
GadgetFreak said:
Go here and download the 2.6.3 image for your device and place it in the root SDcard, and, then install Flashify from the market. Open Flashify and flash the image...
Click to expand...
Click to collapse
My tablet is still getting stuck on the google startup screen.... To get the rom to load, I have to hold down the power and up volume botton.

dspcap said:
That was very simple, thanks
---------- Post added at 01:57 PM ---------- Previous post was at 01:53 PM ----------
My tablet is still getting stuck on the google startup screen.... To get the rom to load, I have to hold down the power and up volume botton.
Click to expand...
Click to collapse
Did you wipe 'Data'?

Error upon flashing....

Hi, I have the 2012 Nexus 7, Wifi only, 16GB, its running stock 4.4.2 rom at this time. I have unlocked the bootloader, installed twrp, and rooted using Wugs Nexus Rootkit (Bless him lol). But now whenever I try to flash any Rom, I've tried about five from different places and downloaded on multiple devices then put them on my nexus, and they will not install. I get this error about md5 which I have no idea why it would be the error every single time I try any different Rom... But here is what it says.
Here are two different ones but both say md5
Sent from my HTC6435LRA using xda app-developers app

bluegreen343 said:
Hi, I have the 2012 Nexus 7, Wifi only, 16GB, its running stock 4.4.2 rom at this time. I have unlocked the bootloader, installed twrp, and rooted using Wugs Nexus Rootkit (Bless him lol). But now whenever I try to flash any Rom, I've tried about five from different places and downloaded on multiple devices then put them on my nexus, and they will not install. I get this error about md5 which I have no idea why it would be the error every single time I try any different Rom... But here is what it says.
Here are two different ones but both say md5
Sent from my HTC6435LRA using xda app-developers app
Click to expand...
Click to collapse
You need to downgrade to stock android 4.3 as you are trying to flash a 4.3 Jellybean ROM

bluegreen343 said:
Hi, I have the 2012 Nexus 7, Wifi only, 16GB, its running stock 4.4.2 rom at this time. I have unlocked the bootloader, installed twrp, and rooted using Wugs Nexus Rootkit (Bless him lol). But now whenever I try to flash any Rom, I've tried about five from different places and downloaded on multiple devices then put them on my nexus, and they will not install. I get this error about md5 which I have no idea why it would be the error every single time I try any different Rom... But here is what it says.
Here are two different ones but both say md5
Sent from my HTC6435LRA using xda app-developers app
Click to expand...
Click to collapse
Try switching to CWM using the rom manager from the play store. I had the exact same problem. Everytime i wanted to flash something via TWRP it would always fail, but once i switched to cwm the problem went away
---------- Post added at 08:55 PM ---------- Previous post was at 08:45 PM ----------
jithumon said:
You need to downgrade to stock android 4.3 as you are trying to flash a 4.3 Jellybean ROM
Click to expand...
Click to collapse
I pretty sure you dont have to downgrade to 4.3 to flash a 4.3 rom. As long as the tablet is rooted and the rom you want to flash is for the N7 it should work, at least it always has for me but TWRP seems to be having a problem flashing roms lately...correct me if i'm wrong tho
---------- Post added at 09:09 PM ---------- Previous post was at 08:55 PM ----------
jrjr100 said:
Try switching to CWM using the rom manager from the play store. I had the exact same problem. Everytime i wanted to flash something via TWRP it would always fail, but once i switched to cwm the problem went away
---------- Post added at 08:55 PM ---------- Previous post was at 08:45 PM ----------
I pretty sure you dont have to downgrade to 4.3 to flash a 4.3 rom. As long as the tablet is rooted and the rom you want to flash is for the N7 it should work, at least it always has for me but TWRP seems to be having a problem flashing roms lately...correct me if i'm wrong tho
Click to expand...
Click to collapse
My last post lol..... I did some research and found out the old version of TWRP has problems on 4.4 so you might have to update TWRP to the lastest version in order to flash zips on 4.4 kitkat. There's a post somewhere around here that mentions it and has a guide that tells how to install the lastest version...

jrjr100 said:
Try switching to CWM using the rom manager from the play store. I had the exact same problem. Everytime i wanted to flash something via TWRP it would always fail, but once i switched to cwm the problem went away
---------- Post added at 08:55 PM ---------- Previous post was at 08:45 PM ----------
I pretty sure you dont have to downgrade to 4.3 to flash a 4.3 rom. As long as the tablet is rooted and the rom you want to flash is for the N7 it should work, at least it always has for me but TWRP seems to be having a problem flashing roms lately...correct me if i'm wrong tho
---------- Post added at 09:09 PM ---------- Previous post was at 08:55 PM ----------
My last post lol..... I did some research and found out the old version of TWRP has problems on 4.4 so you might have to update TWRP to the lastest version in order to flash zips on 4.4 kitkat. There's a post somewhere around here that mentions it and has a guide that tells how to install the lastest version...
Click to expand...
Click to collapse
I think you are right....because I never tried that. I just assumed

Hey guys... Lol I ended up using wugsfresh root toolkit to get to stock 4.3 then used cyanogenmod installer
Sent from my HTC6435LRA using xda app-developers app

Aurora N900 Full G9200 Port 4.2/5.0

Hi there,
Tried flashing above ROMs and it stuck at Installation begin screen in TWRP recovery. Tried restarting and reflashing 5 times and no luck so far.
Any suggestions?
Thank you

Mount system and then try reinstalling the ROM
Sent from my SM-N900 using Tapatalk
---------- Post added at 03:34 PM ---------- Previous post was at 03:29 PM ----------
Tell me the steps you followed while installing the ROM...
Sent from my SM-N900 using Tapatalk

leosrw said:
Mount system and then try reinstalling the ROM
Sent from my SM-N900 using Tapatalk
---------- Post added at 03:34 PM ---------- Previous post was at 03:29 PM ----------
Tell me the steps you followed while installing the ROM...
Sent from my SM-N900 using Tapatalk
Click to expand...
Click to collapse
Steps:
1. Boot to TWRP recovery
2. Select wipe, advanced wipe(Dalvik cache, system, data, internet storage and cache)
3. Wipe successful
4. Install (Select Aurora ROM, skip zip file signature verification)
5. Mounted system, data, cache and micro sd card
6. Confirmed flash and stuck at installation begin.
Thanks,

The steps u followed are perfect...
Then on which ROM you were before installing aurora if it was other than stock ROM then first try going on the stock ROM and then installing the aurora.
Because I too faced same problem with the Dr. Ketan ROM and first had to go on stock and then install the rom . it worked for me I hope it works for u
Sent from my SM-N900 using Tapatalk

leosrw said:
The steps u followed are perfect...
Then on which ROM you were before installing aurora if it was other than stock ROM then first try going on the stock ROM and then installing the aurora.
Because I too faced same problem with the Dr. Ketan ROM and first had to go on stock and then install the rom . it worked for me I hope it works for u
Sent from my SM-N900 using Tapatalk
Click to expand...
Click to collapse
KitKat 4.2.2 BobCat ROM
I was able to flash Hybrid Norma, Phronesis 5.1.1 with no issues. Video recording, NFC are issues with these ROMs.
Hence trying other ROMS to see whether it works.

inetdesh said:
KitKat 4.2.2 BobCat ROM
I was able to flash Hybrid Norma, Phronesis 5.1.1 with no issues. Video recording, NFC are issues with these ROMs.
Hence trying other ROMS to see whether it works.
Click to expand...
Click to collapse
btw, can this ROM be installed in North american Note3 (N900W8)?

Problem while updating LAVA Pixel V1 through OTA...

My LAVA Pixel V1 was running on 5.1, I rooted it and installed CM12, then again I flashed Stock ROM to update it to marshmallow. While updating through OTA it gave me some error. I am writing all words of the screen...
Finding update package...
Opening update package...
Verifying update package...
Installing Update...
file_getprop: failed to stat "/oem/oem.prop" : Permission denied
E :error in @/cache/recovery/block.map
(Status 7)
Installation aborted.
OTA failed! Please power off the device to keep it in this state and file a bug report!
Please help. How can I fix it to be able to update through OTA.
Thanks.

You can try flashing marshmallow stock ROM using twrp

Hey do you have cm 12 for pixel v1?

Try this
sourav4ganguly said:
Hey do you have cm 12 for pixel v1?
Click to expand...
Click to collapse
This is the link but do it carefully and on your own risk.
http://forum.xda-developers.com/cro.../custom-cyanogenmod-12-1-android-one-t3294183
You should note that this CM is for other model but also working on ONE...
Most inportant...Put these files only on SD card not on Internal memory otherwise it won't work.

Suraj Pandey said:
You can try flashing marshmallow stock ROM using twrp
Click to expand...
Click to collapse
I did it using twrp and succeeded but I meant to ask the reason why its not working on OTA?

Is that cm 12.1 working on pixelv1? Did u personally try it?

Hey i tried that cm 12 rom on pixel v1...its didn't work

toroshankumar said:
I did it using twrp and succeeded but I meant to ask the reason why its not working on OTA?
Click to expand...
Click to collapse
You directly flashed marshmallow update 612 MB using twrp?
---------- Post added at 11:12 AM ---------- Previous post was at 11:09 AM ----------
toroshankumar said:
I did it using twrp and succeeded but I meant to ask the reason why its not working on OTA?
Click to expand...
Click to collapse
I tried but was showing no OS installed

Suraj Pandey said:
You directly flashed marshmallow update 612 MB using twrp?
---------- Post added at 11:12 AM ---------- Previous post was at 11:09 AM ----------
I tried but was showing no OS installed
Click to expand...
Click to collapse
Yes I directly flashed after formatting system, cache, and userdata partitions through fastboot. It worked. Most important thing is put update zip in external sd card, not in internal memory otherwise it will show No os installed.

sourav4ganguly said:
Is that cm 12.1 working on pixelv1? Did u personally try it?
Click to expand...
Click to collapse
I tried earlier and it worked but was crashing. So i removed. Sorry for late reply. By the way Stock update is working fine.

Hey guys did you have simply flashed the android 6.0 update of pixel vi (size 612 MB) direcly by putting the update.zip file in external sd card and then simply flashing it by twrp???

update it manually
toroshankumar said:
My LAVA Pixel V1 was running on 5.1, I rooted it and installed CM12, then again I flashed Stock ROM to update it to marshmallow. While updating through OTA it gave me some error. I am writing all words of the screen...
Finding update package...
Opening update package...
Verifying update package...
Installing Update...
file_getprop: failed to stat "/oem/oem.prop" : Permission denied
E :error in @/cache/recovery/block.map
(Status 7)
Installation aborted.
OTA failed! Please power off the device to keep it in this state and file a bug report!
Please help. How can I fix it to be able to update through OTA.
Thanks.
Click to expand...
Click to collapse
it will not support ota updates update it by the link http://forum.xda-developers.com/lav...t/rom-cyanogenmod-13-0-lava-pixel-v1-t3388982 it is cm 13 nightly:good::good:

akshatjain244 said:
Hey guys did you have simply flashed the android 6.0 update of pixel vi (size 612 MB) direcly by putting the update.zip file in external sd card and then simply flashing it by twrp???
Click to expand...
Click to collapse
Yes. In external SD Card.
Sent from my PixelV1 using XDA-Developers mobile app

toroshankumar said:
Yes. In external SD Card.
Sent from my PixelV1 using XDA-Developers mobile app
Click to expand...
Click to collapse
It doesn't given any error??
How did you get the .zip file??
---------- Post added at 04:48 AM ---------- Previous post was at 04:26 AM ----------
toroshankumar said:
Yes I directly flashed after formatting system, cache, and userdata partitions through fastboot. It worked. Most important thing is put update zip in external sd card, not in internal memory otherwise it will show No os installed.
Click to expand...
Click to collapse
You have flashed ota by fastboot???
Not by twrp??

akshatjain244 said:
It doesn't given any error??
How did you get the .zip file??
---------- Post added at 04:48 AM ---------- Previous post was at 04:26 AM ----------
You have flashed ota by fastboot???
Not by twrp??
Click to expand...
Click to collapse
Yes by FASTBOOT. May be it could work after formatting via twrp but I did via FASTBOOT and it worked.
Sent from my PixelV1 using XDA-Developers mobile app

toroshankumar said:
Yes by FASTBOOT. May be it could work after formatting via twrp but I did via FASTBOOT and it worked.
Sent from my PixelV1 using XDA-Developers mobile app
Click to expand...
Click to collapse
And it did not give any error. If you are doing it right and getting error then check if you have right zip.
Sent from my PixelV1 using XDA-Developers mobile app

akshatjain244 said:
It doesn't given any error??
How did you get the .zip file??
---------- Post added at 04:48 AM ---------- Previous post was at 04:26 AM ----------
You have flashed ota by fastboot???
Not by twrp??
Click to expand...
Click to collapse
If you are doing it right then it won't give any error.
Sent from my PixelV1 using XDA-Developers mobile app

akshatjain244 said:
It doesn't given any error??
How did you get the .zip file??
---------- Post added at 04:48 AM ---------- Previous post was at 04:26 AM ----------
You have flashed ota by fastboot???
Not by twrp??
Click to expand...
Click to collapse
Sorry for misunderstanding. I flashed using TWRP but formatted partitions using fastboot.
Sent from my PixelV1 using XDA-Developers mobile app

akshatjain244 said:
It doesn't given any error??
How did you get the .zip file??
---------- Post added at 04:48 AM ---------- Previous post was at 04:26 AM ----------
You have flashed ota by fastboot???
Not by twrp??
Click to expand...
Click to collapse
Downloaded it from xda site. Search u can find
Sent from my PixelV1 using XDA-Developers mobile app

toroshankumar said:
Downloaded it from xda site. Search u can find
Sent from my PixelV1 using XDA-Developers mobile app
Click to expand...
Click to collapse
Please tell me in detail that how have you updated your device by step by step..

Error 7

Hey, I've tried everything about Error 7 and nothing helped me, I'm able to install the ROM from Disk On Key but not from the storage of the device. Save what to do?

The subject is in the wrong place

ahronbr said:
Hey, I've tried everything about Error 7 and nothing helped me, I'm able to install the ROM from Disk On Key but not from the storage of the device. Save what to do?
Click to expand...
Click to collapse
Why don't you try reading the forms and not spam development section.
Sent from my LEX720 using xda premium

mchlbenner said:
Why don't you try reading the forms and not spam development section.
Sent from my LEX720 using xda premium
Click to expand...
Click to collapse
I read everything on the subject, tried everything but nothing helped, the problem continues and I can not install anything from the internal storage.
Sorry for opening the minced topic but I must find a solution.

ahronbr said:
I read everything on the subject, tried everything but nothing helped, the problem continues and I can not install anything from the internal storage.
Sorry for opening the minced topic but I must find a solution.
Click to expand...
Click to collapse
No your have not update your twrp really
Sent from my LEX720 using xda premium

As MclBenner said, you need to update your TWRP : https://twrp.me/leeco/leecolepro3.html

Try redownload and copy the rom again to your internal memory. That may help

i was also getting error 7 when trying flash rom's as well.
I tried updating TWRP as instructed above and continued to get twrp error 7 when i tried to flash any rom.
I then noticed that my error was based on the modem baseband date being wrong.
So I just re-ran the 20s update via eui's update utility and rebooted and was able to flash rom's again.
I hope that helps somebody.
I don't believe the problem was the TWRP version because I re-flashed it twice and the error 7 persisted

dlradlt said:
i was also getting error 7 when trying flash rom's as well.
I tried updating TWRP as instructed above and continued to get twrp error 7 when i tried to flash any rom.
I then noticed that my error was based on the modem baseband date being wrong.
So I just re-ran the 20s update via eui's update utility and rebooted and was able to flash rom's again.
I hope that helps somebody.
I don't believe the problem was the TWRP version because I re-flashed it twice and the error 7 persisted
Click to expand...
Click to collapse
You need to update your firmware get from codeworkx thread
Sent from my LEX727 using xda premium

Thank you much.

Help
dlradlt said:
Thank you much.
Click to expand...
Click to collapse
Can anyone please help me I also have error code 7, but I don't have the official 21s firmware as leeco shut down. How do I install roms.
---------- Post added at 04:12 PM ---------- Previous post was at 04:10 PM ----------
dlradlt said:
Thank you much.
Click to expand...
Click to collapse
Please Help I am also having this issue, but my twrp is the latest version

millkyway4 said:
Can anyone please help me I also have error code 7, but I don't have the official 21s firmware as leeco shut down. How do I install roms.
---------- Post added at 04:12 PM ---------- Previous post was at 04:10 PM ----------
Please Help I am also having this issue, but my twrp is the latest version
Click to expand...
Click to collapse
I had to flash the 20s firmware from codeworks thread in my case the error 7 was because I had the wrong modem date installed.
https://forum.xda-developers.com/le-pro3/development/le-eco-pro-3-x727-twrp-backup-clean-t3727920
Maybe you can restore that backup from twrp. I've used it before

dlradlt said:
I had to flash the 20s firmware from codeworks thread in my case the error 7 was because I had the wrong modem date installed.
https://forum.xda-developers.com/le-pro3/development/le-eco-pro-3-x727-twrp-backup-clean-t3727920
Maybe you can restore that backup from twrp. I've used it before
Click to expand...
Click to collapse
Than you it worked but I hve no sim card support.

millkyway4 said:
Can anyone please help me I also have error code 7, but I don't have the official 21s firmware as leeco shut down. How do I install roms.
---------- Post added at 04:12 PM ---------- Previous post was at 04:10 PM ----------
Please Help I am also having this issue, but my twrp is the latest version
Click to expand...
Click to collapse
millkyway4 said:
Than you it worked but I hve no sim card support.
Click to expand...
Click to collapse
I'm not sure but I just flashed a custom ROM over that backup and everything just worked for me.
I never tried to use it so I don't know. Maybe you have some leftover stuff that you didn't get wiped.
I'd try to start over now that you have the ability to flash ROM's again.

millkyway4 said:
Can anyone please help me I also have error code 7, but I don't have the official 21s firmware as leeco shut down. How do I install roms.
---------- Post added at 04:12 PM ---------- Previous post was at 04:10 PM ----------
Please Help I am also having this issue, but my twrp is the latest version
Click to expand...
Click to collapse
Respectfully, there is no 21s firmware, go back one page and read.
This error 7 is the most common issue on the Le Pro 3 forums and the question has been answered literally a thousand times.
Error 7 is resolved by updating Twrp.
If you cant update Twrp, update your firmware.
Do a Google search and type : "All in One Tool Leeco Pro 3"
You can use it to resolve all of the possible issue variables, so download the newest version of Twrp for your device.
If you have a ZL1 then download the Twrp for the ZL1 if you have a ZL0 then download the TWRP for the ZL0 : I suspect that this is your actual issue: wrong Twrp.
Again get your files together: Twrp, Rom, Gapps, Magisk and at your current stage of using Roms the All in One tool is the best and easiest option. The All in One Instructions are on the Main All In One Tool XDA page.
Sim Card Card issues are often resolved after flashing the correct firmware.