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I wonder whether there is help for someone who thought he knew how to flash a kernel but apparently is deluded. I have the original nexus seven Wi-Fi tablet android version 4.3 build number JWR66V. The system still wants to update me to 4.3 because I ripped some files out of the cache directory to prevent OTA updates. I have both fastboot and adb. I have read the stickies about flashing.
The phone is rooted and the bootloader is unlocked. I use TWRP custom recovery, and it's a good thing, because I solidly bricked myself up just trying to get my lollipop. I know there are tools to root a nexus seven even with stock lollipop, so I thought I'd upgrade my phone to stock lollipop and then use one of those methods. I tried both the stock lollipop kernel and the one provided by chain fire, which I understand is rooted already. (I'm assuming upgrading to lollipop will lose me my root, unless I want to recover back to 4.3.)
I tried to do these things a couple of different ways. When I tried fast boot, I got the message "error: neither -p product specified nor ANDROID_PRODUCT_OUT set". There was a YouTube video suggesting how to deal with this error message. I'm pretty sure I followed the instructions but no go. (I was using the "flash all" command.) This was after I had put the file containing lollipop in the directory, both zipped and unzipped (so that I had an .img file instead of a zip file). I tried using both the zip file with all of the lollipop partitions and the system image file individually. No go. I also had a message that android-info.txt could not be found, even though it was in the same, working directory.
I could be wrong but I don't think you can install a complete updated kernel from a file on the device. I think that works only with update.zip.
I'm still thinking fastboot is my best bet, but there are dependencies apparently and I don't know what files to include in its directory. Then, am I wise to go to stock and then root, or should I simply flash the stock kernel already rooted? I assume that's what chainfire is providing, correct?
I notice the lollipop official ROM nor Chainfire’s supposedly-rooted image have any file named nakasi. I have only .img files, no .zip files.
I found a dozen sets of instructions on how to flash a kernel but something I need is missing from all of them. Does anyone know what it is or can anyone offer some helpful advice?
Thank you,
Leon M.
I am currently on stock rom but rooted. An Ota update popped up can I update without bootloop
I would like to know the same thing
Naruto101 said:
I am currently on stock rom but rooted. An Ota update popped up can I update without bootloop
Click to expand...
Click to collapse
stkman32 said:
I would like to know the same thing
Click to expand...
Click to collapse
No you can't take an OTA if you have any modifications to /system (root). Have a look at my guide:
http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928
I got an 8MB update for the november patch. Being on TWRP and root i need to convert back to stock before i can have it leave me alone? Is there a way to flash the patch without doing that?
Thanks for answering my question
roughriduz said:
I got an 8MB update for the november patch. Being on TWRP and root i need to convert back to stock before i can have it leave me alone? Is there a way to flash the patch without doing that?
Click to expand...
Click to collapse
No way around it, any modifications will cause the update to fail.
Heisenberg said:
No way around it, any modifications will cause the update to fail.
Click to expand...
Click to collapse
@amoeller had me flash the modified boot.img for MDB08M then flash the MDB08M system.img and vendor.img from the factory image. I rebooted bootloader, the booted to TWRP and re-flashed supersu. I am now on the November patch without having to remove TWRP and all works well. My user data was also untouched.
roughriduz said:
@amoeller had me flash the modified boot.img for MDB08M then flash the MDB08M system.img and vendor.img from the factory image. I rebooted bootloader, the booted to TWRP and re-flashed supersu. I am now on the November patch without having to remove TWRP and all works well. My user data was also untouched.
Click to expand...
Click to collapse
User data should never be affected during an OTA anyway.
This is actually the first time I've unlocked a phones bootloader and stuck with the stock rom. I usually use some kind of popular rom with it's own built in OTA (CM/Viper One)
How often do you guys actually update your phones for OTA? It seems like a real hassle
GloriousGlory said:
This is actually the first time I've unlocked a phones bootloader and stuck with the stock rom. I usually use some kind of popular rom with it's own built in OTA (CM/Viper One)
How often do you guys actually update your phones for OTA? It seems like a real hassle
Click to expand...
Click to collapse
I am rooted now so I'll wait a while before updating an ota until there's a big deal of info. However, in the past if I was sticking with stock there's usually at least one developer who posts the updates with root and stuff built in so you can easily flash with twrp. So I'm kind of waiting for that. That or cataclysm or another awesome rom that's close to stock.
GloriousGlory said:
This is actually the first time I've unlocked a phones bootloader and stuck with the stock rom. I usually use some kind of popular rom with it's own built in OTA (CM/Viper One)
How often do you guys actually update your phones for OTA? It seems like a real hassle
Click to expand...
Click to collapse
I wait for factory image for that build and flash over the new images when they become available (provided that root can still be achieved). Some will do a clean wipe and start fresh with the new build and reload in their apps and user data, others will just dirty flash the updated system (and boot/bootloader or whatever else was changed too).
If you think about it, it really isn't all that different from taking an OTA, the difference is that we're applying the commands to flash instead of having it automated. It's not that big of a trade off in my book.
I have 2 questions...
What is the easiest way to make flashing updates a breeze if I have mods in /system partition? I have heard of "freezing" them. Or is the only option... to delete every mod and flash updates? If so, should I keep a note of every change I make to/system?
And last... Should I make a backup of any file i am replacing or overwriting in /system? And if so, do I have to put them back how they were before flashing an update?
Delete
If you're rooted then you need to download the full factory image, extract system and vendor and flash those. Reflash SuperSU.
roughriduz said:
@amoeller had me flash the modified boot.img for MDB08M then flash the MDB08M system.img and vendor.img from the factory image. I rebooted bootloader, the booted to TWRP and re-flashed supersu. I am now on the November patch without having to remove TWRP and all works well. My user data was also untouched.
Click to expand...
Click to collapse
It’s probably easier and quicker just to flash stock factory images separately instead of having to jump through hoops with OTAs. Like I told @roughriduz just flash the updated partition(s) that were updated like system.img, vendor.img, or whatever and just flash SuperSU in TWRP after.
The steps @roughriduz took was
1. Download and extract latest factory image.
2. Download matching modified boot.img for that build (For example MDB08M).
3. Flash system, vendor, and any other partitions (like radios, etc) with fastboot if they were updated in the OTA. Don’t bother to flash stock recovery because we’re not using an OTA. Flashing userdata.img is just like a factory reset.
4. Boot directly into TWRP and flash SuperSU.
5. Reboot and profit.
This method gives you the latest stock build rooted with TWRP while keeping your data because I hate having to redo my phone.
amoeller said:
It’s probably easier and quicker just to flash stock factory images separately instead of having to jump through hoops with OTAs. Like I told @roughriduz just flash the updated partition(s) that were updated like system.img, vendor.img, or whatever and just flash SuperSU in TWRP after.
The steps @roughriduz took was
1. Download and extract latest factory image.
2. Download matching modified boot.img for that build (For example MDB08M).
3. Flash system, vendor, and any other partitions (like radios, etc) with fastboot if they were updated in the OTA. Don’t bother to flash stock recovery because we’re not using an OTA. Flashing userdata.img is just like a factory reset.
4. Boot directly into TWRP and flash SuperSU.
5. Reboot and profit.
This method gives you the latest stock build rooted with TWRP while keeping your data because I hate having to redo my phone.
Click to expand...
Click to collapse
A couple questions:
1. Step 1 refers to the latest factory image that contains the update, correct?
2. Step two refers to the boot.img that contains root?
3. At what point in this process do you flash the modified boot.img, before or after applying the other images?
Thanks for your help!
JimmyJunk said:
A couple questions:
1. Step 1 refers to the latest factory image that contains the update, correct?
2. Step two refers to the boot.img that contains root?
3. At what point in this process do you flash the modified boot.img, before or after applying the other images?
Thanks for your help!
Click to expand...
Click to collapse
1. Latest factory image is the latest factory image from the nexus factory images page. It's not an update like ota, but rather the entire image they would return you to stock if all is flashed.
2. Flashing a modified boot does not give you root. You still have to flash SU, so saying the modified boot contains root isn't right.
3. I flash boot first unless there is an updated bootloader.
JimmyJunk said:
A couple questions:
1. Step 1 refers to the latest factory image that contains the update, correct?
2. Step two refers to the boot.img that contains root?
3. At what point in this process do you flash the modified boot.img, before or after applying the other images?
Thanks for your help!
Click to expand...
Click to collapse
1. This can be whatever the latest factory image is at the moment. It’s currently MDB08M. All the OTA does is update your phone to whatever build it was made for. Factory images already have previously released updates built into them. You can upgrade but avoid downgrading unless you want to factory reset your phone.
2. I’m referring to the boot.img without root by @mrRobinson found https://www.androidfilehost.com/?fid=24269982086992320 although this process can be used for systemless root also. For systemless root you wouldn’t flash SuperSU in TWRP but instead sideload the SuperSU APK as per Chainfire’s instructions and use the matching systemless root boot.img
3. I don’t think it matters but as long as you have the matching modified boot.img with the system.img installed before you restart, you should be fine.
amoeller said:
It’s probably easier and quicker just to flash stock factory images separately instead of having to jump through hoops with OTAs. Like I told @roughriduz just flash the updated partition(s) that were updated like system.img, vendor.img, or whatever and just flash SuperSU in TWRP after.
The steps @roughriduz took was
1. Download and extract latest factory image.
2. Download matching modified boot.img for that build (For example MDB08M).
3. Flash system, vendor, and any other partitions (like radios, etc) with fastboot if they were updated in the OTA. Don’t bother to flash stock recovery because we’re not using an OTA. Flashing userdata.img is just like a factory reset.
4. Boot directly into TWRP and flash SuperSU.
5. Reboot and profit..
Click to expand...
Click to collapse
What the heck did I do wrong here? I just tried to apply the November OTA update to my MBD08K build, it didn't work, and now I am in the process of doing a full reset and rebuild of my phone (flash-all of factory images from Google)
Here are the notes I made as I attempted to follow the procedure in this thread:
Code:
- Download latest build for MBD08K from https://developers.google.com/android/nexus/images?hl=en
- Extract boot.img, system.img, vendor.img to C:\adb (or wherever where adb and fastboot are
installed). You have to
- Right-click, open command window here
- Ensure USB debugging is enabled on phone (grant permissions on phone if you get the popup)
- In command prompt, "adb devices"
- Should see serial number and "device"
- type "adb reboot bootloader"
- Should get to bootloader screen with little android man lying down with hatch open
- type "fastboot devices" - should see your serial # again and "fastboot" beside it.
- type "fastboot flash boot boot.img"
- type "fastboot flash system system.img"
- type "fastboot flash vendor vendor.img"
- Use volume keys to boot into recovery (in my case TWRP)
- Swipe to allow modifications
- Install -> SuperSU.zip that you should have on your phone from last time.
- Reboot system
I saw a red "your phone is corrupt" scary message on startup... took a while to boot. Couldn't get past the dancing circles.
Interrupted boot, rebooted to fastboot, tried to flash old modified boot.img
Booted again, got encryption unsuccessful warning
Flashed most recent boot.img again, stuck booting forever
try again:
- flash system.img
- flash vendor.img
- flash boot.img (modified)
reboot to recovery - your device can't be checked for corruption (yellow warning instead of red)
- swipe to allow modifications
- reboot with TWRP, swipe to install SuperSU
- Encryption unsuccessful. Prompt to factory reset. Click OK. Boots through TWRP.
Give up, start flashing factory images.
EDIT: I might be the stupidest person alive. I think I should have been using the files for MDB08M. Arggghhhh. Someone please confirm I am an idiot.
Edit 2: Factory reset worked, I am at MDB08M. Now rooting again... grr. At least I backed up all my apps & settings to Google Drive with TB.
Edit 3: Rooted and restoring all apps with TB. If anyone has any insight into where I F'ed up I'd appreciate it.
How would I go about if I want to create my own rom based on the latest samfirm/updato rom?
I have this far downloaded one for s7edge. Unpacked the first zip so I get AP/BL and so forth. I've then unpacked the BL and managed to unpack the boot loader stuff so I have kernel an ramdisk by them self. I then unpacked the ramdisk.. But how do I go on to make this a flashable rom? Preferred is to replace or remove the recovery so I can preserve TWRP. I've done all this so far to get a flashable stock rom that doesn't enforce encryption.. If I get all working I might do more stuff with it
Any help or pointers appreciated!
Hi all, I posted this in the 6P bootloop thread, but didn't get a response. As that is a pretty LONG thread, i'm thinking my question may have gotten lost in the jumble.
Quick run down.
A few months back my 6P started the BLOD. I found the fix listed on these pages, applied it, and have been happily using my phone ever since. Phone is bone stock 7.1.2 other than the TWRP recovery and the modified EX kernel for 4 cores.
Since the fix, my phone FINALLY got the OTA update to go to Android 8.0 and i obviously want to get it done. My concern is HOW to do this without causing more headache.
Can anyone point me in the right direction? Should i use the OTA update or download the factory image from Google?
I've got some knowledge as i used to be into the "rooting" scene back in the day, but haven't for a while, so i feel a little lost.
Thanks for any help.
johnnyphive said:
Hi all, I posted this in the 6P bootloop thread, but didn't get a response. As that is a pretty LONG thread, i'm thinking my question may have gotten lost in the jumble.
Quick run down.
A few months back my 6P started the BLOD. I found the fix listed on these pages, applied it, and have been happily using my phone ever since. Phone is bone stock 7.1.2 other than the TWRP recovery and the modified EX kernel for 4 cores.
Since the fix, my phone FINALLY got the OTA update to go to Android 8.0 and i obviously want to get it done. My concern is HOW to do this without causing more headache.
Can anyone point me in the right direction? Should i use the OTA update or download the factory image from Google?
I've got some knowledge as i used to be into the "rooting" scene back in the day, but haven't for a while, so i feel a little lost.
Thanks for any help.
Click to expand...
Click to collapse
Well, for starters do NOT take the OTA. It will either fail or boot loop your phone. Due to the fact you have a modified boot.img you will need to update manually using fastboot with the full image. Re-apply the modified kernel after you finish updating the partitions, but BEFORE booting the first time. You can follow most guides on how to manually update a full image using fastboot, just add the step of flashing the modified kernel before booting.
Thanks for the reply and the help. If i could ask for a little more help, as this is my only phone.
Can you explain the difference between the modified boot.img and the modified kernel?
If i download the factory image from here (https://developers.google.com/android/images) is it ok to the get the latested one (Nov 2017) or do i need to get the original one (Sep 2017 as i'm on Fi)
Once i flash the factory image, is it going to replace the modified boot image as well as the modified kernel?
Follow the OP on this thread (https://forum.xda-developers.com/nexus-6p/general/guide-fix-nexus-6p-bootloop-death-blod-t3640279) in the downloads section there appear to be 2 files i would need, the "Boot.img from stock 6.17, 8.0 firmware" and "EX kernel version 5.03". Am i understanding that correctly?
Like i said, this is my only phone, and i'm probably just being overly paranoid about bricking it, but any clarification would be greatly appreciated.
johnnyphive said:
Thanks for the reply and the help. If i could ask for a little more help, as this is my only phone.
Can you explain the difference between the modified boot.img and the modified kernel?
If i download the factory image from here (https://developers.google.com/android/images) is it ok to the get the latested one (Nov 2017) or do i need to get the original one (Sep 2017 as i'm on Fi)
Once i flash the factory image, is it going to replace the modified boot image as well as the modified kernel?
Follow the OP on this thread (https://forum.xda-developers.com/nexus-6p/general/guide-fix-nexus-6p-bootloop-death-blod-t3640279) in the downloads section there appear to be 2 files i would need, the "Boot.img from stock 6.17, 8.0 firmware" and "EX kernel version 5.03". Am i understanding that correctly?
Like i said, this is my only phone, and i'm probably just being overly paranoid about bricking it, but any clarification would be greatly appreciated.
Click to expand...
Click to collapse
Use the latest November image. The boot.img contains the kernel and ramdisk, critical files necessary to load the device before the filesystem can be mounted. When you flash the new boot.img contained in the Google image, it will overwrite the patched kernel. You then need to re-patch it by installing EX kernel before booting. EX writes to (modifies) the stock boot.img. There are also pre-modifed boot.img files floating around. You will probably get more detailed help in the dedicated thread. Learning to flash manually (or remember how) is not really a big deal and a necessary skill for modding (and for getting yourself out of trouble). Good luck. :good:
v12xke said:
Use the latest November image. The boot.img contains the kernel and ramdisk, critical files necessary to load the device before the filesystem can be mounted. When you flash the new boot.img contained in the Google image, it will overwrite the patched kernel. You then need to re-patch it by installing EX kernel before booting. EX writes to (modifies) the stock boot.img. There are also pre-modifed boot.img files floating around. You will probably get more detailed help in the dedicated thread. Learning to flash manually (or remember how) is not really a big deal and a necessary skill for modding (and for getting yourself out of trouble). Good luck. :good:
Click to expand...
Click to collapse
Ok, so 1 last time (sorry)
1 - Downloaded the latest 8.0.0 factory image from google (this contains the bootloader, radio, and partitions (.zip).
2 - Get phone to fastboot and apply the above 3 new images
3- before rebooting, flash oreo4core (new, modified boot.img), TWRP recovery.img
4- reboot to recovery (TWRP) and apply the modified EX kernel
5 - reboot and (hopefully) profit
Am i missing anything, or doing anything that isn't needed?
johnnyphive said:
Ok, so 1 last time (sorry)
1 - Downloaded the latest 8.0.0 factory image from google (this contains the bootloader, radio, and partitions (.zip).
2 - Get phone to fastboot and apply the above 3 new images
3- before rebooting, flash oreo4core (new, modified boot.img), TWRP recovery.img
4- reboot to recovery (TWRP) and apply the modified EX kernel
5 - reboot and (hopefully) profit
Am i missing anything, or doing anything that isn't needed?
Click to expand...
Click to collapse
<<Disclaimer: I don't use the 4 core kernel, so I don't know if it comes with installer script or someone has just modified the latest boot.img>> Unzip the "partitions" zip you refer to and extract those image files to the same folder as bootloader and modem. For example, you can keep TWRP recovery if you don't flash the recovery.img. That is how you preserve your custom recovery. So in other words you'll now have a folder (your ADB folder?) with 5 image files.... bootloader, radio, boot, system, and vendor all in one folder. <<Note: it is my understanding you just substitute the latest oreo4core file (should be boot.img?) If this is true, copy that file into your ADB folder and let it overwrite the stock boot.img. Stop. Copy over flash-all.bat, change the *.bat extension to *.txt and open in notepad. You will see (and can copy/paste) the fastboot commands to get you started with bootloader and radio. Then flash the last 3 (boot, system, vendor). At this point you can reboot into the OS. Since you substituted the oreo4core boot.img file for the stock boot.img there is no need to use TWRP to flash anything. That and since you skipped flashing the recovery.img, TWRP is still there.
v12xke said:
<<Disclaimer: I don't use the 4 core kernel, so I don't know if it comes with installer script or someone has just modified the latest boot.img>> Unzip the "partitions" zip you refer to and extract those image files to the same folder as bootloader and modem. For example, you can keep TWRP recovery if you don't flash the recovery.img. That is how you preserve your custom recovery. So in other words you'll now have a folder (your ADB folder?) with 5 image files.... bootloader, radio, boot, system, and vendor all in one folder. <<Note: it is my understanding you just substitute the latest oreo4core file (should be boot.img?) If this is true, copy that file into your ADB folder and let it overwrite the stock boot.img. Stop. Copy over flash-all.bat, change the *.bat extension to *.txt and open in notepad. You will see (and can copy/paste) the fastboot commands to get you started with bootloader and radio. Then flash the last 3 (boot, system, vendor). At this point you can reboot into the OS. Since you substituted the oreo4core boot.img file for the stock boot.img there is no need to use TWRP to flash anything. That and since you skipped flashing the recovery.img, TWRP is still there.
Click to expand...
Click to collapse
Thank for the help! Everything seems to be up and running. I know you said you don't use the "4 cores" (can only assume your either on a different phone or yours isn't affected by the BLOD), but do you know if i still need to apply the EX kernel update, or know of a way to tell if it's already been applied?
Thanks again for all the help. I was pretty much in the right direction, but being as how i'd been away from it for a while, i wanted some backup
johnnyphive said:
Thank for the help! Everything seems to be up and running. I know you said you don't use the "4 cores" (can only assume your either on a different phone or yours isn't affected by the BLOD), but do you know if i still need to apply the EX kernel update, or know of a way to tell if it's already been applied? Thanks again for all the help. I was pretty much in the right direction, but being as how i'd been away from it for a while, i wanted some backup
Click to expand...
Click to collapse
I don't think you can flash EX kernel from now on. I think you have to use a modded boot.img that will contain his kernel/ramdisk. This is my guess. You really should be getting your information in the dedicated thread where everyone is actually installing and using it. Google "oreo 4 core" and you will find the XDA thread is the first hit. Good luck. :good:
So it's been a while since discussion about this specific model, but I was wondering if it would be at all possible to root this with Magisk?
Since Magisk can apply root by patching boot image file, I figured it could technically be possible since in this thread:
https://forum.xda-developers.com/galaxy-j3-2016/help/galaxy-j3-sm-j320vpp-configuring-cdma-t3414049
There is a link to a flashable ZIP to "access GSM" with this model phone, found here:
https://mega.nz/#!mtNEibLa!NmVJ7RM0fSDwXdD3CTKi0fVQgYdIMP6m8THRQLyJQRw
The interesting thing about it is that ZIP contains a boot.img file, so what I was wondering, would that the stock boot image file needed for Magisk?
There isn't much information about what's supplied in that ZIP nor have people mentioned it's use or anything, but I was wondering if it could at all be tested to possibly work. Or if whatever is in that ZIP is even the stock firmware.
I can't necessarily test it myself since I need my phone however, can anyone verify the contents of the ZIP or boot.img? It would be a pretty convenient if this was all it takes.
Without root I doubt you will be able to flash anything that isn't an official Samsung firmware update. And depending on which branding your device has,you may not even be able to flash firmware of any type whether it be an update or full firmware. Some carriers insist that Samsung fully lock down the bootloader thus completely crippling the device. U.S. carriers doing this are various. Especially if it is pre-paid. Best advice is to research any device before you purchase it. See if root has been achieved. If not and that device has been out for some time. Avoid it. Pick a device you know has gained root from among the choices offered by any carrier. It would seem you have one of the many locked bootloader turd phones put out by Verizon,Sprint,TRACTURD and so forth. Locked bootloader that won't recognize any flash that isn't signed. Odin or not the flash will fail. Time to flush that turd and find a better alternative.
Fivavoa said:
So it's been a while since discussion about this specific model, but I was wondering if it would be at all possible to root this with Magisk?
Since Magisk can apply root by patching boot image file, I figured it could technically be possible since in this thread:
https://forum.xda-developers.com/galaxy-j3-2016/help/galaxy-j3-sm-j320vpp-configuring-cdma-t3414049
There is a link to a flashable ZIP to "access GSM" with this model phone, found here:
https://mega.nz/#!mtNEibLa!NmVJ7RM0fSDwXdD3CTKi0fVQgYdIMP6m8THRQLyJQRw
The interesting thing about it is that ZIP contains a boot.img file, so what I was wondering, would that the stock boot image file needed for Magisk?
There isn't much information about what's supplied in that ZIP nor have people mentioned it's use or anything, but I was wondering if it could at all be tested to possibly work. Or if whatever is in that ZIP is even the stock firmware.
I can't necessarily test it myself since I need my phone however, can anyone verify the contents of the ZIP or boot.img? It would be a pretty convenient if this was all it takes.
Click to expand...
Click to collapse