Develop Bugs

[Q] Do I have to flash boot.img every time I flash a new Custom Rom?

So I flashed few custom ROMs in a past few days. But every custom ROM requires me to flash boot.img. if I don't flash boot.img, my wifi will error or in other case, my phone won't even boot into homescreen.
I don't mind to do so (flashing boot.img after flash new custom ROM), but is there anyway to switch between custom ROMs without flashing boot.img? Is it caused by my device is S-ON? Cus my previous phone didn't require me to flash boot.img. I tried to backup two custom ROMs and restore in in CWM but I still need to flash boot.img. why can't I just backup 3 custom ROMs in CWM and restore it anytime as I want wothout flash boot.img?
Thanks
"Better late than never, but never late is better"
-Drake

yes unless the rom creator told not to fo that
i. don't think anyone will ever say that
dont just say thanks hit thanks if i helped
a true lfc supporter
and a former symbian lover
sent from my awesome HTC One V running rc 2.0 by CKPV5 -using xda premium
SUPPORT THE SOFTWARE DEVELOPER'S IF YOU LIKE THE GAME / APP BUY IT

JalmiNyondong1933 said:
So I flashed few custom ROMs in a past few days. But every custom ROM requires me to flash boot.img. if I don't flash boot.img, my wifi will error or in other case, my phone won't even boot into homescreen.
I don't mind to do so (flashing boot.img after flash new custom ROM), but is there anyway to switch between custom ROMs without flashing boot.img? Is it caused by my device is S-ON? Cus my previous phone didn't require me to flash boot.img. I tried to backup two custom ROMs and restore in in CWM but I still need to flash boot.img. why can't I just backup 3 custom ROMs in CWM and restore it anytime as I want wothout flash boot.img?
Thanks
"Better late than never, but never late is better"
-Drake
Click to expand...
Click to collapse
Ya.. because of s-on, the kernel cannot be installed during the ROM installation. You can switch between ROMs without flashing boot.img only when those custom ROMs are using a stock kernel.

ckpv5 said:
Ya.. because of s-on, the kernel cannot be installed during the ROM installation. You can switch between ROMs without flashing boot.img only when those custom ROMs are using a stock kernel.
Click to expand...
Click to collapse
Oh. I see. This is really depressing. I really like your ROM but also love Modaco Vanilla ICS ROM. Is there any way to use stock kernel on both ROM? (Just for my personal use, not for published)
Sent from my HTC One V using xda premium

Let me tell you a little secret.. hehe...
1. grab yourself 7-zip (http://www.7-zip.org)
2. decide which rom's boot.img that you want to make a default for all your downloaded custom roms (which based on htc ruu).
3. let say you decide MoDaCo's rom boot.img
4. Open the MoDaCo's rom with 7-zip, browse to system/lib/modules; extract the modules folder with its content.
5. For all custom's rom, replace the modules with the one from MoDaCo.
6. You can flash any custom's rom without a need to flash a boot.img provided you already flash the boot.img from MoDaCo's rom earlier.
So only one time flash the boot.img, the next custom rom, you don't need to.(because you already replace the modules). When you make any nandroid backup of a custom rom, restoring the nandroid, you don't need to reflash the boot.img.
So this works for most custom roms that we have in One V Dev forum at the moment (not much of them too), I can say it should be 99% works. Give it a try.

ckpv5 said:
Let me tell you a little secret.. hehe...
1. grab yourself 7-zip (http://www.7-zip.org)
2. decide which rom's boot.img that you want to make a default for all your downloaded custom roms (which based on htc ruu).
3. let say you decide MoDaCo's rom boot.img
4. Open the MoDaCo's rom with 7-zip, browse to system/lib/modules; extract the modules folder with its content.
5. For all custom's rom, replace the modules with the one from MoDaCo.
6. You can flash any custom's rom without a need to flash a boot.img provided you already flash the boot.img from MoDaCo's rom earlier.
So only one time flash the boot.img, the next custom rom, you don't need to.(because you already replace the modules). When you make any nandroid backup of a custom rom, restoring the nandroid, you don't need to reflash the boot.img.
So this works for most custom roms that we have in One V Dev forum at the moment (not much of them too), I can say it should be 99% works. Give it a try.
Click to expand...
Click to collapse
Sure, sounds promising. I'll give it a try. Thanks
EDIT: It works. :good:
Sent from my HTC One V using xda premium

ckpv5 said:
Let me tell you a little secret.. hehe...
1. grab yourself 7-zip (http://www.7-zip.org)
2. decide which rom's boot.img that you want to make a default for all your downloaded custom roms (which based on htc ruu).
3. let say you decide MoDaCo's rom boot.img
4. Open the MoDaCo's rom with 7-zip, browse to system/lib/modules; extract the modules folder with its content.
5. For all custom's rom, replace the modules with the one from MoDaCo.
6. You can flash any custom's rom without a need to flash a boot.img provided you already flash the boot.img from MoDaCo's rom earlier.
So only one time flash the boot.img, the next custom rom, you don't need to.(because you already replace the modules). When you make any nandroid backup of a custom rom, restoring the nandroid, you don't need to reflash the boot.img.
So this works for most custom roms that we have in One V Dev forum at the moment (not much of them too), I can say it should be 99% works. Give it a try.
Click to expand...
Click to collapse
this is awesome secret... :good::good::good::good:
will try it today..... :angel:
thanks for sharing

[Q] Problems with kernel flashing

Hey guys, i am trying to flash a kernel on my phone (bricked kernel) i came from 3 different roms and i always get the same problem. After i flash the rom and enter into it and make sure everything works, I go back to fastboot to flash the boot.img of the kernel and then proceed to flashing the kernel module in revcovery. Everything goes well but once I restart my phone just wont proceed pass the htc logo
I am running hboot verson 1.36 as that is the highest i can go with a CID_044 and running CWM 5.8.4.0 Is there something i should be doing or am doing wrong? Please help and thanks

Are you on a JB rom ? If you are, you can't use those kernels. They are for ICS roms only

Mr.Hofs i right like always but if you are on a ics rom you still need to repack your boot.img. You can do that by using nibble.cc. First step is to take the source boot.img and that can be found in rom.zip and you select it when you are on nibble.cc by clicking on source img. Then you need kernels boot.img and that comes with the kernel download in the kernel.zip. When it is all ready they will upload and repack and you will download repackee boot.img. Hope it helps and good luck
Sent from my HTC One X using xda app-developers app

Haha thanks, and i had a similar case a while back and i adviced him to use the 0.6 or 0.5 bricked kernel because I saw some reports in the bricked thread about not booting. It worked for him.
And are you using the right bricked kernel on the right rom. There is one kernel for the aosp roms and there is one for the sense roms

I don't know if i understand (bad english). With repacked kernel will it work? Same case, CM10, 1.36 hboot and CWM 5.8.4.0.

hey guys thanks for all your help i got it to work on an ICS rom but not on a JB rom which is a real bummer cause i really like the JB roms so i guess i just skip flashing kernels and stick with stock Thank you all for your help i really appreciate it

In fact there are no custom kernels for JB yet at all, HTC has to release the source code for it .... but they haven't done that yet ! Till then stock is all we have

How did you get back to the default kernel after flash bricked kernel?

There are 2 ways to go back to the stock kernel
1 ; flash the boot.img from the rom you are using and flash the modules that can be found in the rom.zip
2 ; flash the boot.img from the rom you are using and reflash the rom without a full wipe ( only cache & dalvik cache )
These methods are the ones i know, maybe there is a tool somwhere ... but i don't use tools

Mr Hofs said:
In fact there are no custom kernels for JB yet at all, HTC has to release the source code for it .... but they haven't done that yet ! Till then stock is all we have
Click to expand...
Click to collapse
I just want to make sure I understand...If I currently have Stock JB running on my HOX I cannot use a custom ROM because the source has not been released? I am asking because Ive gone through all the "standard steps" needed to unlock, root, backup, and flash CM10, but I cannot get past the boot screen.

angrymanhands said:
I just want to make sure I understand...If I currently have Stock JB running on my HOX I cannot use a custom ROM because the source has not been released? I am asking because Ive gone through all the "standard steps" needed to unlock, root, backup, and flash CM10, but I cannot get past the boot screen.
Click to expand...
Click to collapse
No custom kernels are not possible. And i mean by that, that there is no sweep to wake functions or other big tweaks like undervolting. Custom roms are no problem ! And to your not booting question : CM10 on a JB hboot needs a modified kernel !
http://db.tt/uDdWaAtH
You need this one ! Then it will boot

Mr Hofs said:
No custom kernels are not possible. And i mean by that, that there is no sweep to wake functions or other big tweaks like undervolting. Custom roms are no problem ! And to your not booting question : CM10 on a JB hboot needs a modified kernel !
http://db.tt/uDdWaAtH
You need this one ! Then it will boot
Click to expand...
Click to collapse
Wow, thanks! I'll check it out as soon as Dropbox let's me download it. It says your account has too much traffic and to check back later.
Sent from my HTC One X using xda premium
---------- Post added at 06:33 PM ---------- Previous post was at 05:38 PM ----------
also i have another few questions. Is the boot.img you are inking to different than the one packaged with the CN10 rom? If I want to go back to my stock nandroid backup do I need to flash the stock boot.img, or will the restoring of the backup take care of that for me? if i do need the boot.img from the stock rom, how do I get that.

angrymanhands said:
Wow, thanks! I'll check it out as soon as Dropbox let's me download it. It says your account has too much traffic and to check back later.
Sent from my HTC One X using xda premium
---------- Post added at 06:33 PM ---------- Previous post was at 05:38 PM ----------
also i have another few questions. Is the boot.img you are inking to different than the one packaged with the CN10 rom? If I want to go back to my stock nandroid backup do I need to flash the stock boot.img, or will the restoring of the backup take care of that for me? if i do need the boot.img from the stock rom, how do I get that.
Click to expand...
Click to collapse
Yeah I got a mail that my links are suspended !!!
But yes its a different boot.img, and if you want to restore the nandroid backup you also need to flash the boot.img from the nandroid backup ! Its located inside the backup folder

Here it is, the CM10 boot for usage with higher hboot versions.

Thanks everyone. One more question... I see the stock boot image in the backup, but it has a different file extension. Do I have to convert it, or do I just rename it to boot.img? Right now it's named boot.emmc.win
Sent from my HTC One X using xda premium

Just flash it like this:
fastboot flash boot boot.emmc.win

Thank you so much for the info.
Sent from my HTC One X using xda premium

If the nandroid backup is done with CWM the kernel will be named boot.img, and when the nandroid backup is done with TWRP recovery its named like the file you have ! :thumbup:

Awh yeah! It worked! You guys are awesome, thank you for your help!!
Sent from my PG41200 using xda premium

OK, another question. I have s-off, I was under the impression that I would not have to manually flash boot images. So I guess my question is why do I have to manually flash the boot images?
Sent from my PG41200 using xda premium

S-on Flashing for Pacharx

Newbie here, my Dhd is s-on, ive been flashing and custom rom and kernels to it via cwm and as always i have to flash the boot.img both rom/kernel to fully installed it. Now I want to update my kernel to the newest pacharx release for better battery. but It doesnt have the boot.img which im use to flashing.. when i extract here is what i get:
zImage
unpackbootimg
modclean.sh
mkbootimg.sh
mkbootimg
dd
how do i install this kernel?
i tried flashing the zImage but it doesnt work... please help

You do not extract anything from that zip, just flash it whole from the recovery as you would any boot.img
Sent from my Desire HD using xda app-developers app

ilans93 said:
You do not extract anything from that zip, just flash it whole from the recovery as you would any boot.img
Sent from my Desire HD using xda app-developers app
Click to expand...
Click to collapse
i've already done that but since im on s-on i cant flash the rom via cwm, it needs to be in fastboot... i used to flash kernel with boot.img files on it,but now im just lost with this kernel i want to flash because i cant find the boot.img..

anythingbutipod said:
i've already done that but since im on s-on i cant flash the rom via cwm, it needs to be in fastboot... i used to flash kernel with boot.img files on it,but now im just lost with this kernel i want to flash because i cant find the boot.img..
Click to expand...
Click to collapse
That IS a kernel, not a ROM. Just flash it via fastboot then... You can also do it via ADB if you know how to, if not, use the search bar

ilans93 said:
That IS a kernel, not a ROM. Just flash it via fastboot then... You can also do it via ADB if you know how to, if not, use the search bar
Click to expand...
Click to collapse
I know how to.flash via fastboot and abd, my question is what file should i flash since theres no boot.img file in the kernel... Sorry newbie here

anythingbutipod said:
I know how to.flash via fastboot and abd, my question is what file should i flash since theres no boot.img file in the kernel... Sorry newbie here
Click to expand...
Click to collapse
According what I've read in other posts you can't flash a raw kernel.zip with s-on.
It has also been pointed out that a boot.IMG is Rom specific, so they most likely wouldn't be interchangeable between different roms
Sent from my HTC Desire HD using xda app-developers app

anythingbutipod said:
I know how to.flash via fastboot and abd, my question is what file should i flash since theres no boot.img file in the kernel... Sorry newbie here
Click to expand...
Click to collapse
boot.img is a kernel so don't search for a boot.img in a kernel.zip - it's the same thing only not compressed. ranger4740 is correct. You shouldn't use boot.img from one ROM and put it on another, but that's not what you asked for... As for the fact that you can't flash a kernel.zip with S-ON, I didn't know about that so I can't help you there... Sorry :/ Try asking your question in the kernel thread...

ilans93 said:
boot.img is a kernel so don't search for a boot.img in a kernel.zip - it's the same thing only not compressed. ranger4740 is correct. You shouldn't use boot.img from one ROM and put it on another, but that's not what you asked for... As for the fact that you can't flash a kernel.zip with S-ON, I didn't know about that so I can't help you there... Sorry :/ Try asking your question in the kernel thread...
Click to expand...
Click to collapse
Ok, i also tried to do some research and read some forums, seems my only way to s-off my dhd, which i will be researching next... Thanks:fingers-crossed:

My desired rom has already updated with the kernel that i wanted flash ,so my battery life is now great, although there a bug in battery charging where in it notifies late yet it charges the phone batt. (not that big if a deal for me). Also i created an aroma zip file to install all system update on my phone since the original update flashes the kernel... Thanks for the replies "learn a lot from all those researches i made" :victory:

[Q] [urgent] Help needed

so i got into this problem i sucessfully unlocked the bootloader using htc offficial method flashed the twrp recovery wiped everything as coming from stock rom
downloaded the slimbeam rom and the g apps and flashed it but the problem is after the htc boot screen i am getting this kind of message in red lines and then it get stuck at that i tried several other roms also still the same problem any solutions where i got wrong??

On your PC, take the rom you're flashing and unzip it with 7zip, get the boot.img file over to where your fastboot is, then in fastboot USB mode, issue this command -
fastboot flash boot boot.img
Be sure that you're only using a rom for your phone.

EarlyMon said:
On your PC, take the rom you're flashing and unzip it with 7zip, get the boot.img file over to where your fastboot is, then in fastboot USB mode, issue this command -
fastboot flash boot boot.img
Be sure that you're only using a rom for your phone.
Click to expand...
Click to collapse
thanks for the reply man
and so i have to extract the rom and flash the boot image from it through flash boot and then flash the rom right?
so do i have to do this process for flashing all types of rom or this is one time only process

ankitxperia said:
thanks for the reply man
and so i have to extract the rom and flash the boot image from it through flash boot and then flash the rom right?
so do i have to do this process for flashing all types of rom or this is one time only process
Click to expand...
Click to collapse
You're unlocked with HTCdev.com but encrypted signature security is still there - aka s-on.
You'll need to do this with every rom flash, unless it includes an s-on kernel installer.
And if one does, those don't work 100% of the time, not the dev's fault.
This is pretty much the standard procedure for all s-on HTCs.
You can skip it if your flashing a similar rom and you're sure it has the exact same kernel as the previous one.
But you'll probably spend more time figuring that out each time than just doing the procedure.
I think most people do the rom first, then the boot.img - I think that you want to go with that.

Thanks man really appreciated the reply
Btw can you suggest stable cm rom kernel combo and
also do I have to flash the boot. Img from the rom I downloaded?
I would be great if you provide stable cm rom :thumbup::thumbup:
Send from my nexus 7 still on jb

Sorry, I own other HTC models and you have to go with one for your phone.
And yeah, you want to flash the boot.img from each rom you download and try.
The boot.img contains the kernel - that ties the hardware to the rest of the rom.
They have to match up.

So we I am also trying to flash ligux rom so we need to flash the rom and gapps in the recovery and then flash the hell boy kernel through flash boot via cmd right?
Send from my nexus 7 still on jb
Send from my nexus 7 still on jb

ankitxperia said:
So we I am also trying to flash ligux rom so we need to flash the rom and gapps in the recovery and then flash the hell boy kernel through flash boot via cmd right?
Send from my nexus 7 still on jb
Send from my nexus 7 still on jb
Click to expand...
Click to collapse
If that kernel and rom combo are compatible, yes, that's it exactly for an s-on HTC.

ankitxperia said:
thanks for the reply man
and so i have to extract the rom and flash the boot image from it through flash boot and then flash the rom right?
so do i have to do this process for flashing all types of rom or this is one time only process
Click to expand...
Click to collapse
Everything is here: http://forum.xda-developers.com/showthread.php?t=1996665

bratusm said:
Everything is here: http://forum.xda-developers.com/showthread.php?t=1996665
Click to expand...
Click to collapse
Thank you! I'm on the app and didn't have time to find it.
Go there, do that.

[Q] Help PLz!!

I unlocked bootloader and rooted my htc one v(gsm).I am currently on stock htc sense I want to install twrp so can i install it from goo manager i downloaded from play store??
Also I want cm10 rom so if I flashed it from twrp do i need to install kernel by going into fastboot mode and using cmd etc.??i saw a video tutorial in which they just installed rom from twrp and they didnt installed kernel but i have heard many users are not going past logo as they havent installed kernel...

mandarmane said:
I unlocked bootloader and rooted my htc one v(gsm).I am currently on stock htc sense I want to install twrp so can i install it from goo manager i downloaded from play store??
Also I want cm10 rom so if I flashed it from twrp do i need to install kernel by going into fastboot mode and using cmd etc.??i saw a video tutorial in which they just installed rom from twrp and they didnt installed kernel but i have heard many users are not going past logo as they havent installed kernel...
Click to expand...
Click to collapse
You will want to install your recovery using a cmd prompt. Our phone is S-on, so you may run into difficulty trying to use goo for a recovery installation. MAKE A BACKUP ONCE YOU GET TWRP INSTALLED!!!!
If you want cm10 you will need to get your twrp up and running first, download your desired cm10 zip to your computer, open archives using 7zip, copy the boot img from the rom zip to your working fastboot folder (assuming that you have fastboot set up since you got this far), open a cmd window and navigate to your fastboot folder using the command cd c:\yourfastbootfoldername.
Once your rom is installed, reboot to bootloader. Plug your phone into your pc, it should switch from fastboot to fastboot usb. Use the command fastboot flash boot boot.img. You should now be able to reboot your phone and enjoy cm10!

sellersj27 said:
You will want to install your recovery using a cmd prompt. Our phone is S-on, so you may run into difficulty trying to use goo for a recovery installation. MAKE A BACKUP ONCE YOU GET TWRP INSTALLED!!!!
If you want cm10 you will need to get your twrp up and running first, download your desired cm10 zip to your computer, open archives using 7zip, copy the boot img from the rom zip to your working fastboot folder (assuming that you have fastboot set up since you got this far), open a cmd window and navigate to your fastboot folder using the command cd c:\yourfastbootfoldername.
Once your rom is installed, reboot to bootloader. Plug your phone into your pc, it should switch from fastboot to fastboot usb. Use the command fastboot flash boot boot.img. You should now be able to reboot your phone and enjoy cm10!
Click to expand...
Click to collapse
So I shouldn't install kernel (Hellboy )??? I unlocked my bootloader so my device should be s - off or does that mean something different plz guide me

mandarmane said:
So I shouldn't install kernel (Hellboy )??? I unlocked my bootloader so my device should be s - off or does that mean something different plz guide me
Click to expand...
Click to collapse
You should install kernel that given on every ROM thread, and not always HELLBOY.
Unlocked bootloader doesn't mean that your phone is S-Offed, it is different.

mandarmane said:
So I shouldn't install kernel (Hellboy )??? I unlocked my bootloader so my device should be s - off or does that mean something different plz guide me
Click to expand...
Click to collapse
There is a whole lot more work to get the device s-off. Your kernel is the boot img that I mentioned earlier. I am PrimoC, so I don't have experience with hellboy, but I do have to flash a new kernel with every rom. If you are going from one cm10 to another cm10, you might be safe, but I wouldn't chance it. Unlocking your bootloader allows you to flash kernels. It doesn't give you s-off.

sellersj27 said:
There is a whole lot more work to get the device s-off. Your kernel is the boot img that I mentioned earlier. I am PrimoC, so I don't have experience with hellboy, but I do have to flash a new kernel with every rom. If you are going from one cm10 to another cm10, you might be safe, but I wouldn't chance it. Unlocking your bootloader allows you to flash kernels. It doesn't give you s-off.
Click to expand...
Click to collapse
can you provide any tutorial for installing twrp on htc one v gsm version and downloading link plz that will help me alot

Ringford said:
You should install kernel that given on every ROM thread, and not always HELLBOY.
Unlocked bootloader doesn't mean that your phone is S-Offed, it is different.
Click to expand...
Click to collapse
While flashing cm10 which boot.img file should i use the one that came with rom or hellboy

mandarmane said:
While flashing cm10 which boot.img file should i use the one that came with rom or hellboy
Click to expand...
Click to collapse
The one that came with ROM. And please.. just read the damn instruction in the ROM thread, everything is said clearly there, I can bet on that. Read it carefully step by step or you will end up here soon or sooner with another question like "Guys my htc is bricked help".

I just got home from work.... Did you get it, or would you like that tutorial
Sent from my One V using xda app-developers app

sellersj27 said:
I just got home from work.... Did you get it, or would you like that tutorial
Sent from my One V using xda app-developers app
Click to expand...
Click to collapse
Plz provide me tutorial and can you confirm from any gsm user which kernel should I use for cm10, from cm10 thread I think its Hellboy but not sure and I can't post in development section yet.. thanks