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I can't post in the development forums so I figured I would ask here:
I understand how to use adb and fastboot, etc.. What I am missing is with the new ICS ROM it states that I must "fastboot flash system system.img"; however none of the ICS zip file I have seen come with a system.img file (just the boot.img).
Am I missing something? Any help would be greatly appreciated..
I used the version available on Rootzwiki... not sure if thats the answer you wanted. I'm running 4.0.3 ICS on my wifi XOOM OC to 1.54. No FC's, reboots or anything of the sort. You'll need to be sure that you have su-install.zip, and other img files needed. As I said, you'll find them all on the rootzwiki website under xoom hope this helps, if not good luck.
You are talking about two different things here. I don't know where to start here you're all mixed up. There are several ways to flash a ROM, you can fastboot flash the .img files such as what you are referencing to. Or you can flash an update .zip file from recovery. The way you flash the ROM depends on the source, if its a bunch of *.img files you use fastboot, if it's a *.zip file you use recovery. Just follow the directions given for installation that are provided with the ROM you are downloading.
sboehler said:
I can't post in the development forums so I figured I would ask here:
I understand how to use adb and fastboot, etc.. What I am missing is with the new ICS ROM it states that I must "fastboot flash system system.img"; however none of the ICS zip file I have seen come with a system.img file (just the boot.img).
Am I missing something? Any help would be greatly appreciated..
Click to expand...
Click to collapse
Hello, and welcome to XDA! =] Anyways on with your question. There are two ways to flash a ROM to your xoom. One being fastboot/adb, where you use the command line on your computer to send commands to your device and make it do stuff. This is where you use system.img, boot.img, recovery.img.
The second, is CWM (ClockWorkMod recovery) This, as far as im aware, is the most common way. This is where the .zip's come in. Because you take the .zip you put it on your external SD card. boot into recovery (after flashing CWM of course) and flash the rom. CWM is nice because you can also make a 100% snapshot of your internal memory state via making a nanodroid back up. That way if anything messes up you have a 100% backup you can restore at anytime if you need it.
In a nutshell, You use *.img files with fastboot and .zip files with CWM.
Anyways. If you're new to rooting. Please check out these two threads, They'll help you get started. =]
Xoom Heaven: Root+Non Root Users Are Welcome!
[Guide] Setting up and using adb/fastboot-unlock, flash custom recovery & root
The second guide I did use to flash my own zoom so I can assure you it does work.
Hi,
I don't know if this is the correct section to get this question answered, but I'll try:
I have a new tablet, which is not really known at the moment. I managed to root it and next step would be to port Clockworkmod Recovery to it. Since I only found guides where I always have to repo sync the entire CyanogenMod github (which is 19GB+ as I heard), I searched for an alternative where I could save some traffic
I found a clockworkmod recovery from another tablet and wondered if it was just possible to unpack it, modify the recovery.fstab and repack it again.
Is this possible or do I have to modify more than the recovery.fstab? If yes, could you point me to the right direction?
Regards
dump your stock recovery
unpack the stock recovery and save the vold.fstab somewhere.
upload the stock recovery here
http://builder.clockworkmod.com/
get the output and flash`it
if the key`s are not working, unpack the new cwm, and the old recovery, and put the keys from the old recovery.
if you get some mount points erros, you will have to upload also the saved vold.fstab on the clockwork site when you cook the image.
if this does not offer you a good result, you will need to find a similar device (processor, resolution) that has allready a cwm, and try it
the recovery file is ramdisk/sbin/recovery
Hi,
thanks for showing me a way. Unfortunately builder.clockworkmod.com says it didn't find Android magic. This makes sense, as the image is a uImage with lzma compressed data inside. It seems koush's builder handles only "plain" recoveries...
Bad luck
I guess I'll try your second advice and search for a CWM for a similar device, unpack it, replace the fstab file and repack it again.
Thanks again!
hello I have made the porting on http://jenkins.cyanogenmod.com/job/recovery/lastBuild/console
I end up having a zip archive, how can I make my tablet to read that. I have installed cwm recovery and it is rooted. Let me know how can install it and replace my recovery with this.
BTW I have the original stock firmware of my tablet.
let me know thanks
Hi,
I have a small question. I own a Canadian Samsung 4 SGH-i337m, after reading the main guide for running other carrier rom on this address
http://forum.xda-developers.com/showthread.php?t=2295557
As the guide mention that I didn't need the loki kernel and I could use my carrier kernel.
I used to backup my kernel with SGS kernel flasher to do the job, but it's not working for s4.
I wanted to backup my stock kernel and apply it after the installation of a cursom rom and apply it through TWRP. As I understood it, kernel is the boot.img, and I read somewhere that the way to create this is to copy the boot.img + copy the /sytem/lib/modules files. If I look to the file prepared by iB4STiD in the file MDOB-I337M-VMK6-FIX-4.1 present here, it seems that it's the case.
There is still flashify as a solution but you can't use the file into recovery.
Does someone know how to do it, or point me out where to find a guide where I can do what I want.
thanks in advance,
youpiyo said:
Hi,
I have a small question. I own a Canadian Samsung 4 SGH-i337m, after reading the main guide for running other carrier rom on this address
http://forum.xda-developers.com/showthread.php?t=2295557
As the guide mention that I didn't need the loki kernel and I could use my carrier kernel.
I used to backup my kernel with SGS kernel flasher to do the job, but it's not working for s4.
I wanted to backup my stock kernel and apply it after the installation of a cursom rom and apply it through TWRP. As I understood it, kernel is the boot.img, and I read somewhere that the way to create this is to copy the boot.img + copy the /sytem/lib/modules files. If I look to the file prepared by iB4STiD in the file MDOB-I337M-VMK6-FIX-4.1 present here, it seems that it's the case.
There is still flashify as a solution but you can't use the file into recovery.
Does someone know how to do it, or point me out where to find a guide where I can do what I want.
thanks in advance,
Click to expand...
Click to collapse
What type of ROM are you using? You have to be using a compatible kernel. AOSP ROM's won't work with a stock kernel, and you can't cross Android version between system and kernel. Using any custom kernel developed for your phone with this guide will work okay however.
Thank you for your answer.
in order to answer your question I was trying to flash the hyperdrive to my phone with compatibility pack. But after reboot I go back directly to download mode. So I figured that it was the boot partition that wasn't adapted to my phone.
So yes, I understand that if you flash a rom based on code as cyanogenmod you will need a custom kernel. but for a rom that is based on stock as hyperdrive rom, unless I'm mistaken, I would imagine that the stock kernel should work.:cyclops:
Is there a way to back it up?
youpiyo said:
Thank you for your answer.
in order to answer your question I was trying to flash the hyperdrive to my phone with compatibility pack. But after reboot I go back directly to download mode. So I figured that it was the boot partition that wasn't adapted to my phone.
So yes, I understand that if you flash a rom based on code as cyanogenmod you will need a custom kernel. but for a rom that is based on stock as hyperdrive rom, unless I'm mistaken, I would imagine that the stock kernel should work.:cyclops:
Is there a way to back it up?
Click to expand...
Click to collapse
My best guess is find out which partition it is and use the dd command OR download the ODIN of your firmware version and extract the boot.img. However, it would be easier to just use a custom kernel designed for your phone as if you back it up like that you either have to make it into a flashable zip or use heimdall to restore it every time.
Sent from Black<3's I337 running Foxhound ROM
Thanks for your answer.
That's weird as a nandroid is doing the job,that is hard to find how to backup a kernel.
anyway, I guess my best chance is to download a custom kernel and apply it after installation of the cutom rom. At first boot re apply a backup kernel with an app as flashify.
thanks youpi
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.
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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: