Hi,
I'm very unsure where to put this thread as my device has no forum of its own. I have a ViewSonic ViewPad 7 tablet, but I guess this is not even a device specific question, which is why I ended up posting it here.
I have an image of the stock ROM on my tablet (system.img + boot.img), but I'm unable to extract or flash the system.img directly, which is why I need your help. I've been reading some topics regarding this and tried out different methods, but either I am doing something wrong or the image is not complete. It was created using the cat command in the shell.
If any of you should be able to extract the system.img from this zip file I would be forever grateful, as I really need to get my stock ROM back so that I'm able to have Danish locale as well as text messages.
Thank you very much in advance!
http://www.multiupload.com/6C6M83LR7P
Bump it up
I want to unpack the img but don't want to use in my pc(too confused).
so I want to unpack by the phone,
thank you
ytyyutianyun said:
I want to unpack the img but don't want to use in my pc(too confused).
so I want to unpack by the phone,
thank you
Click to expand...
Click to collapse
I don't think there is. Maybe I'm wrong too.
Basically all these boot.img tools are written in shell/bash and is made specifically to run in Linux distros.
Anyways there is an Android app called, Complete Linux Installer that lets you install any Linux OS in your phone. But I doubt whether boot.img tools work, as it needs various library files for it to work.
On a side note, I guess it would be more complex to do it in phone rather than in PC, if there is some way for it to work.
coolsandie said:
I don't think there is. Maybe I'm wrong too.
Basically all these boot.img tools are written in shell/bash and is made specifically to run in Linux distros.
Anyways there is an Android app called, Complete Linux Installer that lets you install any Linux OS in your phone. But I doubt whether boot.img tools work, as it needs various library files for it to work.
On a side note, I guess it would be more complex to do it in phone rather than in PC, if there is some way for it to work.
Click to expand...
Click to collapse
Thank you for your reply, but do you feel strange that the IMG is created by the recovery, so it is rational that there is a tool about IMG building. then why there is no apk. I mean some professional can extract just from the CWM recovery, I think.
need root
if you wanna get boot.img i think you must be rooted.
k0tsompakos said:
if you wanna get boot.img i think you must be rooted.
Click to expand...
Click to collapse
yes, I root, so I can use the recovery to back and restore,
I think any app that can access zip files in the internal and external memory can extract boot.img.
Like ASTRO File Manager and stuff...
recovery?
You wanna install a rom?
or recovery??
or we speak about boot.img? (Boot img is the boot animation when you turn on your phone.)
k0tsompakos said:
You wanna install a rom?
or recovery??
or we speak about boot.img? (Boot img is the boot animation when you turn on your phone.)
Click to expand...
Click to collapse
Nooooo
boot.img is the kernel (zImage + Ramdisk packed into an image file) that lies in the /boot partition
@ OP - If you want to extract boot.img itself, there are various methods and from CWM recovery like you said. I thought you were mentioning about how to unpack the contents of the boot.img say like zImage, Ramdisk and other files.
0ops
0ops yeah... :silly:
Searching for 1 minute and found this tool :good:
--> [TOOL] Boot.img tools [unpack, repack, ramdisk] <--
( I do not send link cause i am new here and can't :angel: )
It works. Have a nice day
k0tsompakos said:
0ops yeah... :silly:
Searching for 1 minute and found this tool :good:
--> [TOOL] Boot.img tools [unpack, repack, ramdisk] <--
( I do not send link cause i am new here and can't :angel: )
It works. Have a nice day
Click to expand...
Click to collapse
Yes, that's the tool and it works :good:
But as OP mentioned, he wanted to do it within phone, I highly doubt though.
coolsandie said:
Yes, that's the tool and it works :good:
But as OP mentioned, he wanted to do it within phone, I highly doubt though.
Click to expand...
Click to collapse
It could be done using this post http://forum.xda-developers.com/showpost.php?p=20227868&postcount=1124 and a hex editor from play store on your phone. But would be even more fiddly than on pc I would imagine, unless your phone has a largish screen. It could be done though.
If editing the ramdisk, you would need to unpack and repack after editing, which usually requires linux. I recently found http://forum.xda-developers.com/showthread.php?t=2036528 for PC, but have not had a chance to try it yet, seems best solution for OP
coolsandie said:
Yes, that's the tool and it works :good:
But as OP mentioned, he wanted to do it within phone, I highly doubt though.
Click to expand...
Click to collapse
thank you coolsandie, the android is based on linux, isn't it, and if I can, I can install busybox.and using the terminal like Android Terminal Emulator, but I do not know the procedure. like you, it's more complex,
Robbie P said:
It could be done using this post http://forum.xda-developers.com/showpost.php?p=20227868&postcount=1124 and a hex editor from play store on your phone. But would be even more fiddly than on pc I would imagine, unless your phone has a largish screen. It could be done though.
If editing the ramdisk, you would need to unpack and repack after editing, which usually requires linux. I recently found http://forum.xda-developers.com/showthread.php?t=2036528 for PC, but have not had a chance to try it yet, seems best solution for OP
Click to expand...
Click to collapse
it's good tool, it can unpack the boot.img, but as to the kernel, I don't know how to unpack. but this tool add to my favorite, thanks Robbie.
OK, I find the app, names: yaffs, the author I don't know because I found in the search engine. so I also cannot find the course
then the app,
Having all sorts of difficulty creating a boot.img from a zImage I have....
I compiled a custom kernel myself with my own tweaks but having all sorts of trouble creating a good boot.img
Ive taken apart a boot img from stock Maximus (i am on new firmware, etc), and when I put it back together, trying a few tools and different, it never seems to work for me... However, I always seem to be able to fastboot boot zImage, to get a working boot (but as we all know that is temporary).
Is there a way to simply "catch" the boot.img that fastboot creates and temporarily flashes to your device? Is there a temp folder fastboot works with or something that I can access?
Cheers,
AK
http://android-dls.com/wiki/index.php?title=HOWTO:_Unpack,_Edit,_and_Re-Pack_Boot_Images
seems relevant
Thx for the info... Also solved my problem... Really had to specify the ram disk address correctly for the type of build... Dang ramdisk
Sent from my HTC One S using Tapatalk now Free
Hello everyone,
I'm new to low-level Android hacking, so I guess I need some help.
What I am trying to do is getting the stock files from an LG E400, and modify 1-2 things, repack, flash, and see if it works for me.
My first step:
1) Rooting the LG E400
2) Flash CWM Recovery
3) Create a backup
4) Get boot.img from the backup.
So I have a boot.img (which I think is stock, because rooting does not modify the contents of the boot image as far as I know.)
After that, I followed this tutorial to extract the kernel and the ramdisk.
I used a hex editor for this. I saved the kernel and the ramdisk as separate files, and I tried to gunzip the ramdisk. That seemed to work. However, after that, when I try to run cpio on the file, I get a lot of "Malformed number" errors, and only two empty folders are extracted.
And that is where I'm stuck at.
Are the LG phone boot.img-s encrypted somehow? Am I doing something wrong?
If anyone can help me, I would be really grateful.
Thanks in advance
Hi All
Im trying to change the very first splash screen that comes up on my MX Android TV box.
I know its found in the logo.img file which is in the update.zip but have been unsuccesful in unpacking/extracting rle/packing this file.
Ive managed to change the second splash screen (which is within the boot.img) using the dsixdas kitchen, but dont have a clue how to unpack the logo.img - any help/ideas would be much appreciated.
Cheers
GS
gunshot69 said:
Hi All
Im trying to change the very first splash screen that comes up on my MX Android TV box.
I know its found in the logo.img file which is in the update.zip but have been unsuccesful in unpacking/extracting rle/packing this file.
Ive managed to change the second splash screen (which is within the boot.img) using the dsixdas kitchen, but dont have a clue how to unpack the logo.img - any help/ideas would be much appreciated.
Cheers
GS
Click to expand...
Click to collapse
Hi, have you found a solution on how to do this? I'm looking for the same thing
logo.img (or logo.bin) is generally a RLE compressed image. There are many tools to unpack/repack, many of them allowing to load your own image, for example this (I've not checked that, just copying the link to you).
You can find all these tools by simply visiting this useful website
To flash new logo.img you can insert into update.zip or dd from recovery into correct partition. Just google it, is very simple to accomplish.
WARNING: be sure to flash the logo.img format which is expected by your phone, or you may end with a brick! I think this is a standard format (same for all devices) but I'm not sure about that.