Hey guys,
I am having an issue flashing the stock android 4.2.2, coming from factory 4.2.1 only rooted. I downloaded the factory image from http://www.androidpolice.com/2013/0...us-7-3g-android-4-2-2-update-jdq39-right-now/ when I try to flash the zip file in TWRP i get an error assert failed: apple_patc h_check ("system/app/browserproviderproxy.apk
E: Error in /sdcard/"name of zip file" error flasing zip
the files that it is trying to patch do not exist in the file system. I attempted temp unroot to see if that would do it. The official OTA came through, rebooted recovery but did nothing.
Any suggestions?
Had the same issue with TWRP. With the ClockWorkMod Recovery this part works. If you made any modifikations like camera resolution, enabling of wifi tethering or what else, extract the system.img file from the factory image and flash this first to make sure that you really are on stock 4.2.1 ...
And thats it have fun with the new version 4.2.2
Best regards ...
Ah I did not think of that with the wifi tethering, how do I flash the system.img file, using ADB?
affiaff said:
Had the same issue with TWRP. With the ClockWorkMod Recovery this part works. If you made any modifikations like camera resolution, enabling of wifi tethering or what else, extract the system.img file from the factory image and flash this first to make sure that you really are on stock 4.2.1 ...
And thats it have fun with the new version 4.2.2
Best regards ...
Click to expand...
Click to collapse
I'm having an issue here as well.
I'm stock, except I did enable wifi tethering.
I can't update via CWM or OTA, because I get an error during the process.
I tried to pull the system folder out of 4.2.1 and flash that through CWM, but I also get an error when it checks the current system.
EDIT: I finally got updated. It was serious scare for a bit though. The toolkit really messed things up at first. I had to flash back to 4.2.1. After using the toolkit and having failed attempt after failed attempt, I realized I had to reflash the stock recovery first. I was then able flash the stock 4.2.1 image, reflash CWM recovery, and use CWM to install the update. There are still things that are screwy, and I've lost root (the root restore app isn't seeing it as being recoverable, but I'm tired and probably missing something). Anyways, most of my data is in tact, aside from a couple odd issues, so the rest I'll deal with tomorrow. The device does feel more responsive, so I suppose it was worth the bother, but I definitely will not be installing that tethering mod again.
Related
after upgrade to 4.2.2 and reboot, N7 3G went TWRP automatically ....
after reboot from TWRP, it still 4.2.1 ......
what happened ?? how to fix it ??
Thanks
williamlaw said:
after upgrade to 4.2.2 and reboot, N7 3G went TWRP automatically ....
after reboot from TWRP, it still 4.2.1 ......
what happened ?? how to fix it ??
Thanks
Click to expand...
Click to collapse
you probably need stock recovery to complete the update... I would just wait for someone to root the update and then flash it that way
williamlaw said:
after upgrade to 4.2.2 and reboot, N7 3G went TWRP automatically ....
after reboot from TWRP, it still 4.2.1 ......
what happened ?? how to fix it ??
Thanks
Click to expand...
Click to collapse
While your post doesn't make much sense, I assume you ran into the same issue I did on my N73G.
If so, you have a 90% upgraded tablet. All of the system and kernel patches applied, but it got stuck on the radio firmware update. For some reason, this also breaks the bootloader update (for me at least) right before the radio, even though it said it worked. The reason why your tablet still shows 4.2.1 is because the build.prop change, which shows what version you are on, is after radio and didn't get applied.
Without going into too many details, you are a bit stuck. You can't reapply the OTA because it will fail the system asserts now that they were already patched. I would suggest downloading the FULL 4.2.2 IMAGE from Google here:
https://developers.google.com/android/nexus/images#nakasig
And do the following:
adb reboot-bootloader
fastboot flash bootloader (new bootloader file)
fastboot reboot-bootloader
fastboot flash recovery (new recovery file)
fastboot flash radio (new radio file)
Then reboot into recovery mode and let the stock recovery apply the radio firmware update.
You need the stock recovery to apply the radio firmware. Custom recoveries (at least some/most/all) don't support the bach_update.modem function. You can go back to TWRP after you upgrade.
The instructions above will fix everything BUT the build.prop file, which will still be the 4.2.1 version. You can either fastboot flash system with the 4.2.2 system image, or get a copy of a 4.2.2 build.prop file and replace yours with that. Or if you are creative, you can modify the OTA update, remove everything BUT the build.prop patch and apply that manually (but I wouldn't suggest this unless you know what you are doing).
Also, in the future, [Q}s should go in the Q/A section.
phonic said:
While your post doesn't make much sense, I assume you ran into the same issue I did on my N73G.
If so, you have a 90% upgraded tablet. All of the system and kernel patches applied, but it got stuck on the radio firmware update. For some reason, this also breaks the bootloader update (for me at least) right before the radio, even though it said it worked. The reason why your tablet still shows 4.2.1 is because the build.prop change, which shows what version you are on, is after radio and didn't get applied.
Without going into too many details, you are a bit stuck. You can't reapply the OTA because it will fail the system asserts now that they were already patched. I would suggest downloading the FULL 4.2.2 IMAGE from Google here:
https://developers.google.com/android/nexus/images#nakasig
And do the following:
adb reboot-bootloader
fastboot flash bootloader (new bootloader file)
fastboot reboot-bootloader
fastboot flash recovery (new recovery file)
fastboot flash radio (new radio file)
Then reboot into recovery mode and let the stock recovery apply the radio firmware update.
You need the stock recovery to apply the radio firmware. Custom recoveries (at least some/most/all) don't support the bach_update.modem function. You can go back to TWRP after you upgrade.
The instructions above will fix everything BUT the build.prop file, which will still be the 4.2.1 version. You can either fastboot flash system with the 4.2.2 system image, or get a copy of a 4.2.2 build.prop file and replace yours with that. Or if you are creative, you can modify the OTA update, remove everything BUT the build.prop patch and apply that manually (but I wouldn't suggest this unless you know what you are doing).
Also, in the future, [Q}s should go in the Q/A section.
Click to expand...
Click to collapse
is this problem caused by flashed kernel ??
williamlaw said:
is this problem caused by flashed kernel ??
Click to expand...
Click to collapse
Did you not bother to read anything I wrote?
I had the same problem. If you have a TWRP backup from a previous android version that allowed the ota to work just flash that and you'll still receive the ota for 4.2.2
Sent from my Nexus 7 using Tapatalk HD
This happened to me too, though I have the wifi-only version. So it's not just the radio.
I got the same problem with my Wifi version. Is there any fix yet? I only rooted the device but the rest is still stock. How come the update failed?
the same here - stock and rooted only WIFI version.
During install gave ERROR and after manual reboot - now is shows 4.2.1 version and there are not new system updates.
any solution ?
rexxxxx said:
the same here - stock and rooted only WIFI version.
During install gave ERROR and after manual reboot - now is shows 4.2.1 version and there are not new system updates.
any solution ?
Click to expand...
Click to collapse
Got the same problem and I think it was caused by stick mount.
The app seems to modify the "debuggerd" file in system/bin.
Problem solved by replacing the file by the original one.
spiou said:
Got the same problem and I think it was caused by stick mount.
The app seems to modify the "debuggerd" file in system/bin.
Problem solved by replacing the file by the original one.
Click to expand...
Click to collapse
finally flashed back to stock 4.2.1 then OTA update 4.2.2
spiou said:
Got the same problem and I think it was caused by stick mount.
The app seems to modify the "debuggerd" file in system/bin.
Problem solved by replacing the file by the original one.
Click to expand...
Click to collapse
how ? I indeed have the mount stick installed for the OTG cable !
rexxxxx said:
how ? I indeed have the mount stick installed for the OTG cable !
Click to expand...
Click to collapse
Someone posted the original file here : http://forum.xda-developers.com/showthread.php?t=2145265
You can replace the file simply with es file explorer
I'm also in the same boat as the OP.
OTA came down, installed fine, rebooted which went into twrp, tablet still says 4.2.1.
So, is there any way of doing this without doing a wipe ? Or losing any of your data ?
What about putting the update, downloaded from google, on a USB stick and booting into twrp then flashing from there ?
I don't mind losing root, although I have rootkeeper installed, and I don't mind losing custom recovery, all of this can be fixed.
I also have the trinity kernel installed, so will I lose this as well ? Again, don't mind since I am about to test the m-kernel, anyway.
What I don't want to do is lose my data. I have plenty of full twrp backups done, but then these are 4.2.1 backups. Backing up my apps isn't really feasible at the moment because of their sheer size. Horn, NOVA 3, the GTA games, bards tale, all gigs and gigs of data. Infact, I only have 1 gig left on a 32Gb N7, and I just don't have anywhere left to put a full backup of apps on to. I also don't want to download them all again, NOVA 3, for example, took me 6 hours to download on wi-fi.
I have read a lot of advice and help on here, plenty of googling which simply sends you back here anyway, and most advice centers around losing your data in some way. So, any help without losing data would be most appreciated,
spiou said:
Someone posted the original file here : http://forum.xda-developers.com/showthread.php?t=2145265
You can replace the file simply with es file explorer
Click to expand...
Click to collapse
Done this but the problem remain.
About menu shows 4.2.1 and there is no system update for me.
I think update go trough and it changed some files and now these files tells the system update that I am with newest version.
Any solution for this. How to make the system update think that I need an update?
Sent from my Nexus 7 using xda app-developers app
After reading many threads and articles, I finally upgraded to 4.2.2 with stock recovery. Your mileage may vary.
Based on the discussions on http://forum.xda-developers.com/showthread.php?t=2148456, the failure may be caused by an app you installed
that corrupted some system files. Therefore, you have to flash 4.2.1 stock system and boot images back. The nice thing is your data and settings remain intact.
Although you lost root, it can be easily re-rooted using nexus root toolkit.
Now you're back to 4.2.1 which is allowed to upgrade, use OTA RootKeeper to keep su and then upgrade thru OTA. If you can not longer get OTA, you can clean data/stop/start Google Framework service, Google play service, and Google play store, and then re-check update. The last tip I read it somewhere but I forgot where I read it. Sorry.
Good luck. :laugh:
williamlaw said:
after upgrade to 4.2.2 and reboot, N7 3G went TWRP automatically ....
after reboot from TWRP, it still 4.2.1 ......
what happened ?? how to fix it ??
Thanks
Click to expand...
Click to collapse
JohnRM said:
I'm also in the same boat as the OP.
OTA came down, installed fine, rebooted which went into twrp, tablet still says 4.2.1.
I also have the trinity kernel installed, so will I lose this as well ? Again, don't mind since I am about to test the m-kernel, anyway.
Click to expand...
Click to collapse
Which part of STOCK is unclear? You cannot use OTAs unless you are STOCK. That means stock ROM contents. Stock kernel. Not twiddled with, not renamed, not deleted, not modified, not OverAmplifiedWithSuperBaseBoostLOLZKewlBeatsified, etc.....
rexxxxx said:
Done this but the problem remain.
About menu shows 4.2.1 and there is no system update for me.
I think update go trough and it changed some files and now these files tells the system update that I am with newest version.
Any solution for this. How to make the system update think that I need an update?
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
You must clear the data of the Google framework (in the list of apps) and reboot immediately the tablet. Then the update will be proposed again.
One more thing : when you replace the file, check that the permissions are identical.
khaytsus said:
Which part of STOCK is unclear? You cannot use OTAs unless you are STOCK. That means stock ROM contents. Stock kernel. Not twiddled with, not renamed, not deleted, not modified, not OverAmplifiedWithSuperBaseBoostLOLZKewlBeatsified, etc.....
Click to expand...
Click to collapse
Exactly. I don't understand why we need to see posts like that over and over and over again. Hell, the OTA update will even tell the user what failed, and yet people still complain and ask what's wrong.
Also, while in most cases a custom recovery is OK (though the update will overwrite it), with the N73G unit, you need to use the stock recovery, otherwise it will fail without warning ahead of time.
spiou said:
Got the same problem and I think it was caused by stick mount.
The app seems to modify the "debuggerd" file in system/bin.
Problem solved by replacing the file by the original one.
Click to expand...
Click to collapse
Can you elaborate? E.g., where do you get the original debuggerd from, how do you replace it (adb push?), etc.
Can't update from 4.3 Using stock kernel ( swapped from franco to install the ota)
Tried CWM and TWRP, both fail.
here what happens: https://www.dropbox.com/s/6a1oesuwa3zgk1h/2013-11-14%2004.12.43.jpg?m
the same problem, the same CWM version
Not sure if it helps, but I followed this guide and now I am on KitKat
Download the JWR66Y factory image, extract everything and flash the system.img in fastboot mode, which should restore any changes made to the system partition. Try again after that
I'm having the same issue. I was on JWR66V and tried to update to 4.4 in cwm but it wanted me to be on JWR66Y... so after much hunting around I finally found a working JWR66Y flash able zip and was able to update to that.
However, I noticed that supersu got screwed up in the process, saying it couldn't find binaries. I downloaded and flashed the latest supersu, but that had no effect. I figured I would go ahead and try updating to 4.4 anyway and fix the root issue later...
The 4.4 update seemed to be going OK in cwm until I hit that same issue you did at about 75%. I've seen elsewhere that certain versions of supersu have been causing update problems. My only other thought is maybe I need to update my cwm to a newer version.
Eregoth said:
Download the JWR66Y factory image, extract everything and flash the system.img in fastboot mode, which should restore any changes made to the system partition. Try again after that
Click to expand...
Click to collapse
Why not getting directly the kitkat-image and flash boot.img and system.img in fastboot mode? No further update needed ...
Sent from my Nexus 7 using xda app-developers app
I'm trying to apply the 5.0.2 OTA on my wife's Nexus 7. When I try and sideload the OTA, I get this message:
Code:
"/system/bin/install-recovery.sh" has unexpected content
It was rooted previously so inside Super SU, I used the 'full unroot' option then tried to apply the OTA again. Same results. I also made sure to reflash the stock recovery in case that had anything to do with it (I was using WUG toolkit which was booting into stock recovery, but just in case...). Same results.
I've seen other reports of applying just the system.img file from inside the factory image. (Here and Here)
Is that a solution that would work for me? Is anyone else having this same issue and has a solution for it?
I could do a factory reset, but thats sortof a pain in the butt I'd like to avoid if I can...
Thanks,
Zeustopher
I've always used fastboot to flash boot, recovery and system then adb sideloaded the update zip and never had an issue nor have I ever lost data.
Looks like you definitely need to flash system since that's the error you're getting. It takes seconds so why not do it.
Mr_JMM said:
I've always used fastboot to flash boot, recovery and system then adb sideloaded the update zip and never had an issue nor have I ever lost data.
Looks like you definitely need to flash system since that's the error you're getting. It takes seconds so why not do it.
Click to expand...
Click to collapse
Same issue. Worked for me.
Pretty sure it is because 5.0 checks the entire system partition rather than pieces, so simply being rooted will cause to fail because there will be a mismatch. Pretty sure if you go the OTA root, you have to flash back to stock and unroot before you can update without failing. I would just flash the images directly in NRT or using ADB, and you should be fine.
I followed this method and it worked like a charm for me.
http://www.reddit.com/r/Nexus5/comments/2psomc/
Manual option
I flashed the boot.img and system.img matching the current version on our tablets (extracted from the factory image) and after that the OTA update works.
Made a backup just in case, but did not need it as all settings and data were preserved.
I'm guessing the return to stock does something similar (maybe a couple of things extra)
Hi,
I have a rooted Nexus 4 with android 5.0 lollipop build LRX21T.
I have TWRP recovery installed version : v2.8.0.1
The device id rooted via placing the zip file in the device and flashng it via TWRP recovery.
But i am not able to update to android 5.0.1 via google OTA update.
Everytime i try to install the 5.0.1 OTA it goes to TWRP recovery.
I found that the downloaded OTA update file is placed in /cache folder , so i try to update it manually but failed as it shows some update partition error.
"E: error executing updater binary in zip '/cache/e93b********************.signed-occam-LRX22c-from-LRX21T.e93b****.zip"
update partition details.....
I think i am getting this error because the device is rooted.
Can someone guide me how to update my device..and if this because of the rooted device how to unroot without going back to stock.
Thanks in advance....
You can't flash the ota in twrp. You have to be 100% stock recovery, system, kernel, and radio. Flash the stock recovery with fastboot then try the ota.
Sent from my Nexus 9 using XDA Free mobile app
I flashed the stock recovery the OTA update continued in the stock recovery , then it showed a error....and i had to restart the phone ...now the ota update has disappeared with the phone still in android 5.0 ...Can you tell me how to get the OTA update back...?
1)Does the error came because the phone is still rooted ?
2) If so how do i remove the root with returning stock .?
3) also if i root and return to stock will it wipe my phone apps and their data...
Now i got the OTA update downloaded manually on my laptop and and booted into stock recovery to try to sideload the zip it gave me the error
"package expects build fingerprint of google /occam/mako:5.0/LRX21T or google /occam/mako:5.0/LRX22C user release keys; this device has google/occam/mako:4.4/KRT160 user release keys .....
This is weird as i am running android android lollipop 5.0 LRX21T and not android kitkat....
Did you flash mods while rooted?
Sent from my Nexus 4
arkangel72 said:
Did you flash mods while rooted?
Sent from my Nexus 4
Click to expand...
Click to collapse
Tried both...with and without Root....same error....
Try flashing factory image.
The OTA will flash only on the stock recovery it won't work in any modified/custom recovery. So flash stock recovery first then you are good to go.
Edit: You may also try flashing the factory image, u may lose your data while doing that
Head to https://developers.google.com/android/nexus/images and download the latest image, flashing procedure is explained there too.Its not compulsory to lock bootloader afterwards BTW, its personal preference.
sachin.parmar100 said:
The OTA will flash only on the stock recovery it won't work in any modified/custom recovery. So flash stock recovery first then you are good to go.
Edit: You may also try flashing the factory image, u may lose your data while doing that
Head to https://developers.google.com/android/nexus/images and download the latest image, flashing procedure is explained there too.Its not compulsory to lock bootloader afterwards BTW, its personal preference.
Click to expand...
Click to collapse
Actually i dont want to flash stock as i will lose all the data in the process....
Any other way....?
If there is no other way could you please suggest any tool kit which will backup all data including sms ,contact, call logs and all app data and /data/media folder. in one go ...?
use advanced backup from twrp backup menu and select data only to create a nandroid backup of data only
you can also use titanium backup to backup to choose what to backup and restore it afterwards but it will need root again.
sync your contacts with google server
Flah rom in fastboot
Download factory image, flash system, bootloader and recovery manually. You won't lose your data.
You need stock recovery to proceed flashing the OTA, custom recovery won't flash the OTA, i don't think being rooted is the issue Just flash the stock recovery to solve the problem.
sachin.parmar100 said:
You need stock recovery to proceed flashing the OTA, custom recovery won't flash the OTA, i don't think being rooted is the issue Just flash the stock recovery to solve the problem.
Click to expand...
Click to collapse
Rooted IS an issue. You can't be rooted and apply the OTA file, it will fail every time. As a previous poster has said, the phone MUST have stock bootloader, recovery and be not rooted for the stock OTA's to apply. If they see any modification during the process, they abort. It's been discussed many times.
Yaz75 said:
Rooted IS an issue. You can't be rooted and apply the OTA file, it will fail every time. As a previous poster has said, the phone MUST have stock bootloader, recovery and be not rooted for the stock OTA's to apply. If they see any modification during the process, they abort. It's been discussed many times.
Click to expand...
Click to collapse
thanks for pointing out i was so wrong
So this morning I got an update to fix the voLTE bug. I'm unlocked with twrp installed and rooted. Just for the sake of experimenting I tried installing it. Well that didn't work. Just gets stuck in twrp recovery and you have to power the phone off completely to get it to boot. I guess my question (even though it's a little early) is there a way to install the update without reverting back to stock?
EDIT: Link to the zip
https://drive.google.com/open?id=0BxqNotAWlwLUQ1Fzcjc2YXd4QzA
I don't believe so.
In the past you either had to go back to stock or wait on someone to create a compatible update for rooted devices.
Can you post link to zip?
If you are rooted, you can find the zip in cache folder in recovery.
Can you add what variant and build you are using before the update? Also the build afterwards?
KapilFaujdar said:
Can you post link to zip?
If you are rooted, you can find the zip in cache folder in recovery.
Click to expand...
Click to collapse
I got the update, but all I see on my magisk rooted G5+ in /cache/recovery are log files and the fstab files. Anywhere else to look?
gghose said:
I got the update, but all I see on my magisk rooted G5+ in /cache/recovery are log files and the fstab files. Anywhere else to look?
Click to expand...
Click to collapse
Yeah I can't find anything in that folder either.
I received the update and applied it. I am not rooted.
I have the XT1687 model.
My current build number is NPN25.137-35
My device BL unlocked, TWRP installed and rooted with magisck.
I'm getting the update notification and splash screens several times daily.
Anyone rooted try installing the update with Flashfire app?
bvsbutthd101 said:
So this morning I got an update to fix the voLTE bug. I'm unlocked with twrp installed and rooted. Just for the sake of experimenting I tried installing it. Well that didn't work. Just gets stuck in twrp recovery and you have to power the phone off completely to get it to boot. I guess my question (even though it's a little early) is there a way to install the update without reverting back to stock?
Click to expand...
Click to collapse
If you have systemless supersu, you should just be able to apply the update after reverting to stock recovery.
So I found where the zip downloads. I wonder what flashing it in twrp would do?
EDIT: Here's the link to the zip and I've put it in the OP.
https://drive.google.com/open?id=0BxqNotAWlwLUQ1Fzcjc2YXd4QzA
glight0 said:
My device BL unlocked, TWRP installed and rooted with magisck.
I'm getting the update notification and splash screens several times daily.
Anyone rooted try installing the update with Flashfire app?
Click to expand...
Click to collapse
OK, so I tried flashing recovery.img from stock firmware build 33. But the OTA update will not install, instead I get an error after downloading and rebooting (red triangle at recovery mode).
So I tried fully reverting to stock firmware but I decided to skip over erasing userdata. Afterward the OTA downloaded and installed successfully. Keeping userdata does not seem to have caused an issue.
My problem now though is how to get root back without having to wipe userdata after re-flashing TWRP.
Or is this not possible and if I want to root I must first wipe userdata so that TWRP can read internal memory?
bvsbutthd101 said:
So I found where the zip downloads. I wonder what flashing it in twrp would do?
EDIT: Here's the link to the zip and I've put it in the OP.
https://drive.google.com/open?id=0BxqNotAWlwLUQ1Fzcjc2YXd4QzA
Click to expand...
Click to collapse
Just tried flashing it with TWRP and no luck:
Verifying current system....
E3002: Package expects build thumbprint of 7.0/NPN25.137-35/37:user/release-keys or 7.0/NPN25.137-33/35:user/release-keys; this device has .
Updated process ended with ERROR: 7
which doesn't make much sense since I rooted the stock ROM (Build number reads NPN25.137-33).
If your using a custom recovery flash the stock recovery, then go to the stock recovery and using your computer flash using adb sideboard command. I assume you already know how to do this. Hope that helps.
gghose said:
Just tried flashing it with TWRP and no luck:
Verifying current system....
E3002: Package expects build thumbprint of 7.0/NPN25.137-35/37:user/release-keys or 7.0/NPN25.137-33/35:user/release-keys; this device has .
Updated process ended with ERROR: 7
which doesn't make much sense since I rooted the stock ROM (Build number reads NPN25.137-33).
Click to expand...
Click to collapse
I'm stuck in the same boat... no idea how to flash the stock recovery and sideboard, what that even means, or if that would break root. I just followed the step-by-step "how to root" video when I first got the phone
There's a workaround to disable the "advanced LTE" or whatever it was called, so I did that. But in the meantime until a more "user friendly" means of updating is available, is there a way I can get rid of this nag screen? Way back on an earlier device (Samsung Charge?) I remember manually editing a "build.prop" file or something to match the latest version so I wouldn't keep getting the software update nag. Is there something that will do the same here, or is there a system app I can freeze in TiB?
My best guess is freezing "Moto Actions 03.022.1.4-N" because it's showing "(updated)" on the side.
rellim113 said:
I'm stuck in the same boat... no idea how to flash the stock recovery and sideboard, what that even means, or if that would break root. I just followed the step-by-step "how to root" video when I first got the phone .
Click to expand...
Click to collapse
What he means is you need to download the stock rom, unzip it, then boot phone to bootloader mode and connect to PC. Then flash the recovery.IMG from the stock rom folder with command prompt:
Fastboot flash recovery recovery.img
Then you can on the phone tell it to boot to recovery mode. This will be a screen with Android on his back and the words NO Command on the bottom. Then plug to PC and use adb command to sideload the update zip like this:
adb sideload [nameofupdatefile].Zip
glight0 said:
What he means is you need to download the stock rom, unzip it, then boot phone to bootloader mode and connect to PC. Then flash the recovery.IMG from the stock rom folder with command prompt:
Fastboot flash recovery recovery.img
Then you can on the phone tell it to boot to recovery mode. This will be a screen with Android on his back and the words NO Command on the bottom. Then plug to PC and use adb command to sideload the update zip like this:
adb sideload [nameofupdatefile].Zip
Click to expand...
Click to collapse
Strange, reflashed the stock recovery and adb can't see it (adb devices returns nothing). And when trying to install it via the normal OTA way, the stock recovery tries to install but ends with an error.
That's what happened to me when I tried reverting to stock recovery and then trying to install update from phone Settings app.
I ended up having to revert to stock rom to get ota to apply with settings app. But now I am trying to root again but after installing TWRP data is encrypted again. So looks like I will have to wipe data before re-rooting.