[Q] How do I uninstall FK kernel, and just flash the stock one? - ONE Q&A, Help & Troubleshooting

I remember reading a post during the 11.5 update that explained this really well. I installed the new CM12S file the day it came out using TWRP, had to re-root the phone, and install FK kernel again, but I keep getting CM12S update notices 10 times a day. Isn't there a way I can just flash the stock Kernel or something so my phone will let me install CM12S using the OTA method? Then root, change the kernel, etc. and all that fun stuff again later? Any reply would be GREATLY appreciated, THANKS!

You can extract the kernel (boot.img) from the ROM zip and flash with fastboot.
Code:
fastboot flash boot boot.img
Transmitted via Bacon

Related

Cm 11 44S firmware

Is there any stock recovery flashable zip for this firmware not fastboot flash able ? And one ore thing, do I need unlocked bootloader for this ? My device is 64 GB non-global version
Uploading for you now, standby.
Transmitted via Bacon
Thank you very much.one more thing buddy, can you share any link for multirom patched AK kernel for cm 11s as I couldn't find any in specific thread. I would like to dual boot it with Lollipop ROM. Sorry to keep on bothering you
No problems, here you go:
https://docs.google.com/file/d/0B98G0KTJwnBFM09OTEZ2NnVfekE/edit?usp=docslist_api
You need an unlocked bootloader and custom recovery to flash firmware though. And this is only the firmware, not the full OS.
Can't help with the kernel though, sorry.
Transmitted via Bacon
Hello, could I get a link as well?
I'm rooted with Custom Recovery, but I don't want to use fastboot as I'm having some adb driver funkiness.
So this way I can just flash 44S directly from the recovery after performing a Wipe..
I was happy on 1+1 44S and then immediately after OTA update to 05Q, keyboard because super laggy / touchscreen issues. Want to go back in a least painful way. All backed up now.
Thanks ahead of time!
My index thread contains all the links you need:
http://forum.xda-developers.com/showthread.php?t=2843675

[Q] Can I update stock N5 BUT with Franco Kernel?

I've got a Nexus 5 on Lollipop that's completely stock except for running franco kernel. Haven't touched it for awhile. If I check and there are any OTA updates available, will they install successfully?
No, you must have stock kernel, stock recovery, and unroot
micens said:
No, you must have stock kernel, stock recovery, and unroot
Click to expand...
Click to collapse
Thanks.
Is there a way to manually flash the OTA, or to install it one way or another, without having to revert to stock kernel and unroot and then re-root and re-install franco again?
Edit flash-all file and remove "-w".
Save the file and flash it from fastboot
.psd said:
Is there a way to manually flash the OTA, or to install it one way or another, without having to revert to stock kernel and unroot and then re-root and re-install franco again?
Click to expand...
Click to collapse
As of Lollipop, the OTA method has changed and instead compares the checksum/hash of the entire /system partition, as well as the boot and recovery partitions. The "old" pre-Lollipop method was to check the specific files it cares about rather than sum of the entire partition.
The best way for you to update is download the factory image, extract it then flash the boot and system images using fastboot while your device is booted into the bootloader. You may also want to flash the new bootloader and/or radio. Don't flash the userdata image as it will wipe your /data partition (which the internal storage also resides in), unless that is something you want.
After that, boot into your custom recovery and simply flash the latest SuperSU and if you want to, a Lollipop version of the kernel you want. Files required by SuperSU/root access reside in the /system partition, which prevents an OTA update, and is overwritten when flashing a factory system image. A KitKat kernel won't boot on Lollipop, and a custom kernel also prevents OTA.
OTAs are really only for those who have absolutely no software modifications (and are not informed enough to be able to flash manually) and is honestly the worst way of updating.

[Q] How to get back to stock recovery?

I have 210.12.40.falcon_umts.EURetail.en.EU ROM installed on my XT1032.
I also have TWRP recovery. I want to install Lollipop OTA so I have to get back to stock recovery.
I tried to flash recovery.img from https://mega.co.nz/#!HRpRTR4Q!GNPL3a1Syc8vwholky1wNNfX4rQ-24swytFM6cUVowM via fastboot but it's not working (red triangle). How to do that?
You need to flash back to stock 4.4.4 with no root and stock recovey, update Motorola Services app in the play store, then check for OTA updates..
audit13 said:
You need to flash back to stock 4.4.4 with no root and stock recovey, update Motorola Services app in the play store, then check for OTA updates..
Click to expand...
Click to collapse
Please read before answering.
I have stock 4.4.4 and I have OTA avaliable. But I can't install it with custom recovery.
My problem is only that I can't install stock recovery.
Did you unzip the file and try to flash the stock recovery using fastboot?
You did not mention whether your ROM was rooted, had any apps removed, etc,. and this is why I suggest re-flashing to make sure you have a completely stock ROM.
You have the EU retail ROM on your phone and the link is for the Retail GB. Not sure if both ROMs use the same recovery and partition layout.
I've just finished flashing stock recovery, this is the guide I used:
http://forum.xda-developers.com/moto-g/general/gpe-ota-lrx21z-5-0-1-xt1033-xt1032-t2969847
You're going to have to download mfastbootv2, Minimal ADB and Fastboot and the batch files, then mfastboot flash recovery recovery.img and I guess you're done.
Though I've did the whole tutorial, so I'm not sure if that one command is enough if you only want to flash recovery, but I think that's all you need.
Need 5.0.1 stock recovery to update to 5.1 ota
Hello, does anyone have the stock recovery image for 5.0.1/LRX21Z.M002? I have been searching google for hours to try and find this image. Any help would be appreciated.
Pr3no said:
I've just finished flashing stock recovery, this is the guide I used:
http://forum.xda-developers.com/moto-g/general/gpe-ota-lrx21z-5-0-1-xt1033-xt1032-t2969847
You're going to have to download mfastbootv2, Minimal ADB and Fastboot and the batch files, then mfastboot flash recovery recovery.img and I guess you're done.
Though I've did the whole tutorial, so I'm not sure if that one command is enough if you only want to flash recovery, but I think that's all you need.
Click to expand...
Click to collapse
audit13 said:
Did you unzip the file and try to flash the stock recovery using fastboot?
You did not mention whether your ROM was rooted, had any apps removed, etc,. and this is why I suggest re-flashing to make sure you have a completely stock ROM.
You have the EU retail ROM on your phone and the link is for the Retail GB. Not sure if both ROMs use the same recovery and partition layout.
Click to expand...
Click to collapse
So, for last 2 hours I was trying to flash stock recovery. I tried to flash different ROMs, wiped data and system several times. Nothing seemed to work. After flashing recovery.img from any stock firmware package there always was red triangle and it didn't work. All custom recoveries works.
So since I've already had my data wiped, I just flashed Lollipop with fastboot and it works well. But still doesn't have stock recovery.

Is there a way to revert custom ROM to stock and keep the phone rooted?

Also, how can I tell what were the previous versions of Android that my phone had (STOCK)?
For example: there were several 5.1.1 versions or 5.0. versions - how do I know which one do I need?
Thanks.
The easiest way to have a routed rom would be to flash a stock rom from Google, flash twrp, and flash supersu from twrp.
audit13 said:
The easiest way to have a routed rom would be to flash a stock rom from Google, flash twrp, and flash supersu from twrp.
Click to expand...
Click to collapse
Sorry if I didn't explain myself - my phone is rooted and I have a custom ROM. What I want to do is to go back to stock ROM but keep it rooted.
Thanks.
Flash a stock rom, then just root the stock rom. There is no other way unless you flash a stock pre-rooted rom.
audit13 said:
Flash a stock rom, then just root the stock rom. There is no other way unless you flash a stock pre-rooted rom.
Click to expand...
Click to collapse
So you can't keep it rooted while flashing stock?
And how do you know which versions are for your phone (if I don't want to go back to the latest Marshmallow for example)?
You can only keep root when flashing stock if you find a prerooted stock image.
Google search for nexus factory images.
audit13 said:
You can only keep root when flashing stock if you find a prerooted stock image.
Google search for nexus factory images.
Click to expand...
Click to collapse
Yes, I know that I need to Google for factory image, but there are several images with the same release. For example, there are three 5.1.1. (LMY48B, LMY48I and LMY48M). Same with 6.0.0. and 4 X 6.0.1 version. How do you know which one is for my device?
Thanks.
Any stock image for hammerhead will work on a hammerhead device. The reason it will delete root is you will have to flash system, and unless the system image you flash is prerooted, no more root.
wangdaning said:
Any stock image for hammerhead will work on a hammerhead device. The reason it will delete root is you will have to flash system, and unless the system image you flash is prerooted, no more root.
Click to expand...
Click to collapse
Thanks!
Just trying to understand that difference between the different versions, or are these simply system updates, from XXX29K to XXX29S for example?
Changes in the android version 5.0->5.1->6.0 are fairly large system updates. Within 5.1.1 they are security patches.
If you have a rooted phone and talk about flashing, you should know this. Else you are a menace to your phone...
Root is a system modification - if you delete or reinstall the System partition, you'll lose root. But re-root is easy.
I recommend to read tutorials and get some knowledge before trying to root, flash or before asking those questions, where Senior xda-members just shake their heads.
The simple way to do what you seem to want is to back up all your important stuff (photos, etc.), install MMB29V (the latest March 1st 6.0.1 security version), install TWRP 3.0.0.0, and from TWRP flash SuperSU v2.70. It will take slightly longer than it's taken me to type this, but not much...
After that, when a new monthly security version comes out, flash system.img, boot.img & radio.img, and repeat the TWRP & SuperSU steps. No data loss.

Revert/going back to stock kernel - how?

Hi!
I am at the moment using latest build of FlashKernel but thinking about first reverting back to stock kernel, so I instead can flash latest ElementalX Kernel for 8.1.0 (March update.)
Now to the question..
How is the exact procedure and way to do this actually? I've tried google it but can't really find anything that tells me how-to do it. Anyone around here that can shed & share some light on this?
xFirefly93 said:
Hi!
I am at the moment using latest build of FlashKernel but thinking about first reverting back to stock kernel, so I instead can flash latest ElementalX Kernel for 8.1.0 (March update.)
Now to the question..
How is the exact procedure and way to do this actually? I've tried google it but can't really find anything that tells me how-to do it. Anyone around here that can shed & share some light on this?
Click to expand...
Click to collapse
Flash the stock boot.img to the "boot" slot. That is to say:
Download the full image or ota from Google. Extract it and locate the boot.img. You may have to extract a second zipped file to find it , I forget. Fastboot flash boot path\to\boot.img where "path\to\" is the path to where the extracted boot.img file is located on the computer. Be aware that recovery lies within the boot.img so if you had twrp installed and still want it then it'll have to be reflashed with the two-step process (boot the .img and flash the .zip)

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