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Fastboot boot img

Hello all. Im new to this particular forum. I own a Galaxy Nexus, but I am unlocking/rooting my buddies One S for him. I have gone through the loops already; unlocked the bootloader, rooted, and installed custom recovery (CWM) with no issues. I was pleasantly surprised to find out that it was a snap compared to his previous HTC Legend. Nightmare.
Anyway, forgive me if this has in fact been answered as I have been searching. After a custom ROM is flashed you still have to flash a boot img via fastboot? I attempted to install CM10 yesterday and get stuck at the HTC boot screen?? Luckily I made a nandroid of the stock ROM and easily reverted. Where do I find the appropriate boot img? Is it just the img that is found in the unpacked ROM? Couldn't find anything pertaining to this in the ROM write up. I know with my Nexus you flash the ROM via recovery and that is it. Strange that you need to also flash the boot img following the ROM flash.
Any help is appreciated.

brunswick000 said:
Hello all. Im new to this particular forum. I own a Galaxy Nexus, but I am unlocking/rooting my buddies One S for him. I have gone through the loops already; unlocked the bootloader, rooted, and installed custom recovery (CWM) with no issues. I was pleasantly surprised to find out that it was a snap compared to his previous HTC Legend. Nightmare.
Anyway, forgive me if this has in fact been answered as I have been searching. After a custom ROM is flashed you still have to flash a boot img via fastboot? I attempted to install CM10 yesterday and get stuck at the HTC boot screen?? Luckily I made a nandroid of the stock ROM and easily reverted. Where do I find the appropriate boot img? Is it just the img that is found in the unpacked ROM? Couldn't find anything pertaining to this in the ROM write up. I know with my Nexus you flash the ROM via recovery and that is it. Strange that you need to also flash the boot img following the ROM flash.
Any help is appreciated.
Click to expand...
Click to collapse
Hello there, since you installed cwm recovery, you have to flash the boot.img via fastboot, if you have the twrp recovery you may not need to flash it via fastboot, it does it for you if you have an hboot under 1.14 but if its over that hboot your going to have to flash the boot.img for any Rom via fastboot. It still wouldn't hurt to flash the boot.img via fastboot but that's just me, well I hope I helped you and if I did then good, and if you wanna know more just ask...
If I helped then just press the thanks button
Sent from my One S

leohdz148 said:
Hello there, since you installed cwm recovery, you have to flash the boot.img via fastboot, if you have the twrp recovery you may not need to flash it via fastboot, it does it for you if you have an hboot under 1.14 but if its over that hboot your going to have to flash the boot.img for any Rom via fastboot. It still wouldn't hurt to flash the boot.img via fastboot but that's just me, well I hope I helped you and if I did then good, and if you wanna know more just ask...
If I helped then just press the thanks button
Sent from my One S
Click to expand...
Click to collapse
Got it to work. Thank you. :good:

brunswick000 said:
Got it to work. Thank you. :good:
Click to expand...
Click to collapse
Hi,
I was using CM10 and now I want to revert back to my previously used stock ROM. However after restoring I'm still unable to boot (I'm using ClockworkMod Touch). Do I need to flash the stock boot.img too? Where I can find it?
Thanks in advance!

TnTonly said:
Hi,
I was using CM10 and now I want to revert back to my previously used stock ROM. However after restoring I'm still unable to boot (I'm using ClockworkMod Touch). Do I need to flash the stock boot.img too? Where I can find it?
Thanks in advance!
Click to expand...
Click to collapse
Its in the rom.zip just extract it. Also look for Flash Image Gui in apps section as enables you too flash a boot.img direct from your phone whilst booted in a rom and will even extract the files for you from the new rom.zip!
Edit: Link to Flash Image Gui - http://forum.xda-developers.com/showthread.php?t=1954121

shadowch31 said:
Its in the rom.zip just extract it. Also look for Flash Image Gui in apps section as enables you too flash a boot.img direct from your phone whilst booted in a rom and will even extract the files for you from the new rom.zip!
Edit: Link to Flash Image Gui - http://forum.xda-developers.com/showthread.php?t=1954121
Click to expand...
Click to collapse
I can't find the zip file for stock HTC ROM
Anyway, I found the boot.img in the nandroid backup folder and it's all good now.
Thank you for the link! ^_^

I would also switch to TWRP. Seems to have less issues, if any, for most folks
Get it thru Goo Manager from PlayStore--

[Q] One last question before my first flash into the team viper rom

First let me say thanks for everyone's help! These forums have been GREAT! Now onto my question. I have successfully rooted my phone (2.20) and installed permaroot, and TWRP. I've backed up my stock rom using TWRP. If I want to install the Venom Viper XL rom, but want to make sure I do it correctly. I've downloaded the latest rom (3.1.0), verified the checksum. I've watched some videos on youtube that show how to flash roms using TWRP, however there is a statement in thread regarding the viper xl rom that is confusing to me. This is the statement that I'm not sure about:
"If you have 1.14 hboot you will need to flash the boot.img in fastboot. You will need to extract this from the ROM zip. I have found the following tool useful: [TOOL] HTC Auto Boot.img Installer (One Click Tool)"
I have hboot 1.14 on my phone. Based on this, do I still need to flash the boot.img that's included in the zip file to my phone using ADB before I flash the rom? I'm wondering if this is separate from TWRP or in addition to TWRP.
Thanks for any feedback here to a total noob!

Yes sir and use fastboot place the bootimg in the same folder as your fastboot exe and goodies... Open a command prompt there and have your phone in fastboot mode type fastboot flash boot boot.img

If you're hesitant. About fastboot, you can also download flash gui from here in the apps & themes section or support the dev and get it from the play store.
Then all you simply do is open the app, point to the rom zip and flash it. When it's done you just manually reboot your phone instead of clicking the radio button in the app. Boom. Wipe system and factory reset inside of twrp and follow Viper ROM instructions. Enjoy!
Sent from my HTC One XL using Tapatalk 2

THANKS guys! Just flashed it, and it worked GREAT! I LOVE JELLY BEAN!!!!

opto_isolator said:
THANKS guys! Just flashed it, and it worked GREAT! I LOVE JELLY BEAN!!!!
Click to expand...
Click to collapse
This is your place for all questions answered. Don't be afraid to ask if you can't find your answer. Viper is an awesome rom and can be tweaked to speed. Enjoy the tweaks too but be sure to make a backup in twrp when you get it the way you like it. If you can figure that one out, simply go into recovery and select BACKUP. It will ask you to swipe for backup then. Then it will reboot. Then if you want a kernel (not much you can do but overclock right now) use the flash gui app for that too. Same as if you used it flash the boot img. I'd recommend ElementalX1.5. :beer:
Sent from my HTC One XL using Tapatalk 2

[Q] Htc one s telus RUU?

I made the mistake of running a cm10 rom on my htc one s that didnt work on i so now i can only access TWRP and my phones bootloader from my One S so I'm trying to find my phone's stock RUU but there are so many out there! Can anyone tell me how to find one? Or another way to get into my phone using another ROM? My phone is rooted with Twrp recovery, Unlocked bootloader obviously and S-on. All my phone does is show the htc bootscreen and then go black but I can still enter bootloader and the TWRP menu and I can connect it to my computer fine. Any help would be VERY greatly appreciated!

IsaacDroid said:
I made the mistake of running a cm10 rom on my htc one s that didnt work on i so now i can only access TWRP and my phones bootloader from my One S so I'm trying to find my phone's stock RUU but there are so many out there! Can anyone tell me how to find one? Or another way to get into my phone using another ROM? My phone is rooted with Twrp recovery, Unlocked bootloader obviously and S-on. All my phone does is show the htc bootscreen and then go black but I can still enter bootloader and the TWRP menu and I can connect it to my computer fine. Any help would be VERY greatly appreciated!
Click to expand...
Click to collapse
Don't give up. I had the same issue with my telus One S. I think I fixed it by falshing boot image separately and after flashing CM10. I believe this happens if the phone is rooted but is in S-ON mode, whatever that means. I remember it really gave me a hard time and as I was going to give up i flashed the boot image and it worked. You have to do it through a command window on your PC. There should be an all-in-one tool in this forum somewhere to simplify the steps a bit. Good luck!

Thanks!
new_convert said:
Don't give up. I had the same issue with my telus One S. I think I fixed it by falshing boot image separately and after flashing CM10. I believe this happens if the phone is rooted but is in S-ON mode, whatever that means. I remember it really gave me a hard time and as I was going to give up i flashed the boot image and it worked. You have to do it through a command window on your PC. There should be an all-in-one tool in this forum somewhere to simplify the steps a bit. Good luck!
Click to expand...
Click to collapse
Thank you very much! Could you tell me what boot image you flashed and maybe how to get it and also how you flashed it? Thank you so much for the response!

IsaacDroid said:
Thank you very much! Could you tell me what boot image you flashed and maybe how to get it and also how you flashed it? Thank you so much for the response!
Click to expand...
Click to collapse
It is in the zip file that you download to flash, i.e. your new ROM. So when you download CM10, open the zip file. BOOT.IMG will be there. Extract it and flash it to your phone. I believe everything was in One_S_All-In-One_Kit_v3.4. Look it up in the forum and it has all the tools you need. I admit that it was a pain and nothing was straight forward. I always root my android devices and install new ROMs. But HTC One S was particularly tricky.
Good luck!

Hello there! Fellow HTC One S user here! Don't give up on CM10! It's way better than stock on your one S! What you need to remember is that HBoot versions higher than 1.09 can't flash the boot while installing the rom, so you need to do that after flashing a rom! The boot for your version is going to be included in the rom's zip file. Look for the boot.img file located in the zip file's root. Every rom should have this. Place this boot.img file in the kernel folder of the One S all in one kit and flash it. You should be good to after that!
Don't hesitate to ask for more help if needed!
Simon

seoman81 said:
Hello there! Fellow HTC One S user here! Don't give up on CM10! It's way better than stock on your one S! What you need to remember is that HBoot versions higher than 1.09 can't flash the boot while installing the rom, so you need to do that after flashing a rom! The boot for your version is going to be included in the rom's zip file. Look for the boot.img file located in the zip file's root. Every rom should have this. Place this boot.img file in the kernel folder of the One S all in one kit and flash it. You should be good to after that!
Don't hesitate to ask for more help if needed!
Simon
Click to expand...
Click to collapse
When I try to flash a ROM through fastboot it sends it fine but then it says: FAILED (remote: not allowed), and I tried pushing the ROM with adb but when I tried to put it on the sdcard, it said permission denied, do you know why? I am S-ON, would that be a problem? Thanks!

[HOW-TO]Flash boot.img in recovery

This is a very short one
Credits:
turge - for helping, whenever he can
TrickDroid team for testing every sh... - best guys on the planet :angel:
Pretty often I stumble upon guys having issues to flash boot.img via fastboot, especially for noobs on the block. Also when flashing new Kernels it`s handy, if you always have your current boot.img as flashable on your device in case something is going wrong or you simply don`t like the new Kernel.
So here is the very short how-to:
1. Download the BootUpdate_by_hestheone64.zip
2. Open the zip with winrar or 7zip and drag the boot.img in the zip (just below Meta-Inf)
3. Copy the zip to your SD and flash convenient in Recovery
Download Boot Recovery flasher:
http://www.androidfilehost.com/?fid=22926241640218843

You're on fire today!
I've hit my 8 thanks limit. Sorry.
But it didn't stop me 5 starring again

This will work on other phones, like One X?

stifler05 said:
This will work on other phones, like One X?
Click to expand...
Click to collapse
Works only on qualcomm devices

Can`t say for sure, but you definitley need to adjust mmcblk0p for boot.img in updater script first. otherwise you might flash boot in data block or wherever
On One it sits in mmcblk0p33
So just type:
adb shell
su
cat /proc/emmc
and you should see the correct block.

What is the purpose of flashing boot.img?
going to basic, what is boot.img by the way?
Thanks.

It's the kernel partition if I'm not wrong.
Flash boot.img let you change the kernel.

liaobp1983 said:
What is the purpose of flashing boot.img?
going to basic, what is boot.img by the way?
Thanks.
Click to expand...
Click to collapse
When in doubt--wiki--
http://android-dls.com/wiki/index.php?title=HOWTO:_Unpack,_Edit,_and_Re-Pack_Boot_Images

he_stheone64 said:
This is a very short one
Credits:
turge - for helping, whenever he can
TrickDroid team for testing every sh... - best guys on the planet :angel:
Pretty often I stumble upon guys having issues to flash boot.img via fastboot, especially for noobs on the block. Also when flashing new Kernels it`s handy, if you always have your current boot.img as flashable on your device in case something is going wrong or you simply don`t like the new Kernel.
So here is the very short how-to:
1. Download the BootUpdate_by_hestheone64.zip
2. Open the zip with winrar or 7zip and drag the boot.img in the zip (just below Meta-Inf)
3. Copy the zip to your SD and flash convenient in Recovery
Download Boot Recovery flasher:
http://www.androidfilehost.com/?fid=22926241640218843
Click to expand...
Click to collapse
Pls make it compatible to work with HTC ONE X .
Thankx in advance :thumbup:
Sent from my HTC One X using Tapatalk 2

rishimewara said:
Pls make it compatible to work with HTC ONE X .
Thankx in advance :thumbup:
Sent from my HTC One X using Tapatalk 2
Click to expand...
Click to collapse
In the future forward a dev to this ans ask if it will work on your device, it's easier since you know the dev has the device to test on
Sent from my HTC One using Tapatalk 2

If we have s-off, can we just flash a ROM.zip with the boot.img in it and skip all these steps?
Sent from my HTC One using Tapatalk 4 Beta

What does this flashable zip do that is different from ROM zips? Why and how does kernel flashing via recovery work? (I'm from HTC Desire X and want to make it compatible with my device).

dansou901 said:
What does this flashable zip do that is different from ROM zips? Why and how does kernel flashing via recovery work? (I'm from HTC Desire X and want to make it compatible with my device).
Click to expand...
Click to collapse
rom zip flashes the whole rom (together with boot) whereas this one is just for the boot.img. It's useful when you are trying out custom kernels (like bubba for the One S) and want to revert. If you want, you technically could just dirty flash your current rom to get the original boot back

So that will work with S-On on our phone as well? HTC Desire X is qualcomn based as much as I know...

dansou901 said:
So that will work with S-On on our phone as well? HTC Desire X is qualcomn based as much as I know...
Click to expand...
Click to collapse
Nope. You can't flash a boot.img with s-on devices. It needs to be done through fastboot.
If you want, maybe try getting s-off? It's really easy with rumrunner.us

Will this work on a HTC Desire C? it has a qualcomm processor.
Thanks,

For any htc device?

@he_stheone64..can you guide me making a flashable zip for galaxy tab 2 P3100.....? Thanks in advance

tried this for the m8, it flashes apparently without problems but when I check the kernel remains the same, it doesn't changed
any ideas?

you saved my thank you very much

[Q] how to flash - really in trouble

Hi all,
Apology if this questions may already been ask millions of time but I am really stucked at the moment and hoping that someone may guide me to the correct direction.
I have got HTC One X-LTE (Evita)
I managed to get S-OFF and also CID - 111111
It has TWRP 2.6
The last time I got it working was on the STOCK 4.2.2 I downloaded from the XDA - then I got into the issues of rebooting and loosing signal from time to time. so I went into my TWRP backup I had and reflashed it using my old backup made from my TWRP.
the reflashed failed and now I can only boot up to the HTC logo and then black screen.
I can get to the TWRP recovery and I have got fastboot and ADB on my PC.
When I run the fastboot devices command --> it shows device connected BUT when i try ADB command ---> no device is found.
It will be much appreciated if someone can guide me to the right direction as I am really stucked at the moment not sure where to start.
I tried searching in the forum but I don't think I went to the correct area/tutorial.
Please help
Thank you

When you made your twrp backup did you select system,data, and boot? If it's hanging at the HTC screen it seems there is not boot.img installed or one that is incompatible with your backup. Open whatever Rom your backup is made from and copy the boot.img to your fastboot directory. Then reboot the phone into fastboot mode and flash the boot.img using this command.
Fastboot flash boot boot.img
Then reboot the phone and see what happens
Sent from my HTC One XL using Xparent Red Tapatalk 2

ImagioX1 said:
When you made your twrp backup did you select system,data, and boot? If it's hanging at the HTC screen it seems there is not boot.img installed or one that is incompatible with your backup. Open whatever Rom your backup is made from and copy the boot.img to your fastboot directory. Then reboot the phone into fastboot mode and flash the boot.img using this command.
Fastboot flash boot boot.img
Then reboot the phone and see what happens
Sent from my HTC One XL using Xparent Red Tapatalk 2
Click to expand...
Click to collapse
Thanks for the reply.
When looking at the TWRP backup I copied into my PC - does not have the .img - the one I can find is MD5
Can I use the existing ROM I donwload from XDA like : EVITA_UL_JB_50_S_TMO_DE_5.08.111.2_By_Turge.zip
when I extracted EVITA_UL_JB_50_S_TMO_DE_5.08.111.2_By_Turge.zip - I can see the "boot.img" can I use this one?
Thanks

ardabelati said:
Thanks for the reply.
When looking at the TWRP backup I copied into my PC - does not have the .img - the one I can find is MD5
Can I use the existing ROM I donwload from XDA like : EVITA_UL_JB_50_S_TMO_DE_5.08.111.2_By_Turge.zip
when I extracted EVITA_UL_JB_50_S_TMO_DE_5.08.111.2_By_Turge.zip - I can see the "boot.img" can I use this one?
Thanks
Click to expand...
Click to collapse
I had a somewhat similar experience with Viper 4.0 ROM - I managed to get Cyanogenmod installed correctly (particularly this one). Take a shot and see if it works - atleast your phone will be up and working.

sandys1 said:
I had a somewhat similar experience with Viper 4.0 ROM - I managed to get Cyanogenmod installed correctly (particularly this one). Take a shot and see if it works - atleast your phone will be up and working.
Click to expand...
Click to collapse
Hi Sandy,
I tried the link but I think it is broken link.
Can you please let me know which one is the link .
Cheers

ardabelati said:
Hi Sandy,
I tried the link but I think it is broken link.
Can you please let me know which one is the link .
Cheers
Click to expand...
Click to collapse
hmm - Im on ROM dated 09/13, which is not present now. Your best bet would be http://get.cm/get/aOM
Also remember to flash Google Apps (play store, etc.) which is packaged separately here - http://goo.im/gapps/gapps-jb-20130813-signed.zip

ardabelati said:
Hi Sandy,
I tried the link but I think it is broken link.
Can you please let me know which one is the link .
Cheers
Click to expand...
Click to collapse
Did it work finally ?

sandys1 said:
Did it work finally ?
Click to expand...
Click to collapse
Hi Sandy
Thank you again for your help
I finally got my phone at least booting again.
What i did was I went to the fastboot and then correct to the PC and when it was asking for format the drive, I did format it (fingers crossed) and luckily it let me see the ROm I downloaded from the Stock 4.2.2 Turge version.
Now my problem is that the phone keeps rebooting.
I don;t know how to flash the kernel as suggested on the front page of the thread.
What is the most stable ROM at the moment?
I want to learn how to flash and fix this - I have kept reading post after post but I still can not get myself to where I want it to be which is fixing the reboot issue from the STOCK 4.2.2 Turge version.
I am a real newbie so I am not too familar with some of the fancy terms people use.
Any help is greatly appreciated.
Thanks again

ardabelati said:
Hi Sandy
Thank you again for your help
I finally got my phone at least booting again.
What i did was I went to the fastboot and then correct to the PC and when it was asking for format the drive, I did format it (fingers crossed) and luckily it let me see the ROm I downloaded from the Stock 4.2.2 Turge version.
Now my problem is that the phone keeps rebooting.
I don;t know how to flash the kernel as suggested on the front page of the thread.
What is the most stable ROM at the moment?
I want to learn how to flash and fix this - I have kept reading post after post but I still can not get myself to where I want it to be which is fixing the reboot issue from the STOCK 4.2.2 Turge version.
I am a real newbie so I am not too familar with some of the fancy terms people use.
Any help is greatly appreciated.
Thanks again
Click to expand...
Click to collapse
It sounds like it might be a bad download or something. I noticed u never mentioned wiping the phone before flashing, Are u clean wiping? And also what hboot are you on?
Sent from my HTC One X using xda app-developers app

ardabelati said:
Hi Sandy
Thank you again for your help
I finally got my phone at least booting again.
What i did was I went to the fastboot and then correct to the PC and when it was asking for format the drive, I did format it (fingers crossed) and luckily it let me see the ROm I downloaded from the Stock 4.2.2 Turge version.
Now my problem is that the phone keeps rebooting.
I don;t know how to flash the kernel as suggested on the front page of the thread.
What is the most stable ROM at the moment?
I want to learn how to flash and fix this - I have kept reading post after post but I still can not get myself to where I want it to be which is fixing the reboot issue from the STOCK 4.2.2 Turge version.
I am a real newbie so I am not too familar with some of the fancy terms people use.
Any help is greatly appreciated.
Thanks again
Click to expand...
Click to collapse
You can either flash the kernel, which can be found in the Android Development section, flashing the kernel is just like flashing a ROM, just install in Beastmode. Or you can upgrade your firmware to 2.15, the instructions are I'm the first post of the ROM thread.
Asking which ROM is best/favorite/most stable is against the rules so we can't answer that question.
When you say the phone keeps rebooting, does it ever make it into the OS or is it boot looping (showing the boot animation then starting over)?
Sent from my Evita

timmaaa said:
You can either flash the kernel, which can be found in the Android Development section, flashing the kernel is just like flashing a ROM, just install in Beastmode. Or you can upgrade your firmware to 2.15, the instructions are I'm the first post of the ROM thread.
Asking which ROM is best/favorite/most stable is against the rules so we can't answer that question.
When you say the phone keeps rebooting, does it ever make it into the OS or is it boot looping (showing the boot animation then starting over)?
Sent from my Evita
Click to expand...
Click to collapse
Thanks for the reply
When you said that flashing kernel is the same as flashing ROM, I did it By going to TWRP and the press install and locate the zip file. Is this what should be done?
What is beast mode?
Sorry for the basic questions
Thanks

Yeah that's how you install the kernel. It must be done after you install the ROM. I kinda worded my reply a bit weird, sorry about that. Beastmode is the name of the kernel, you can find it here:
http://forum.xda-developers.com/showthread.php?t=2165880
Sent from my Evita

I did try to flash it through recovery but it always failed. Not sure why. I copied the kernel zip file into my phone sd and then I went to recovery and press the install and located the kernel zip file but still failed.
Sent from my HTC One XL using Tapatalk 2

Which recovery version are you using?
Sent from my Evita

Recovery is 2.6.3.
The process failed on not able to fine the MD5 file or something like that. We don't need to extract the Zip file do we?
Cheers

Disable md5 checking in settings. You never need to extract a kernel or ROM zip.
Sent from my Evita

timmaaa said:
Disable md5 checking in settings. You never need to extract a kernel or ROM zip.
Sent from my Evita
Click to expand...
Click to collapse
I have checked the setting in TWRP and nothing is ticked.
When I flash the zip, it is still saying "failed due to md5 does not exists".
I am not sure which should be address first but I now noticed that there is an error : "unable to locate storage device"
also came out.
When I plug my phone to PC I can see the storage but why it is saying "storage device not found" in TWRP?
Thanks