Database Develop

[Q] Problems booting into recovery

I am pretty sure I have followed the directions for installing CWD correctly but I cannot boot into recovery from "Power Off" state. This is a cut-and-paste of my ADB session. Everything looks OK right?
Thanks for any help.
Code:
# dd if=/dev/block/mmcblk0p6 of=/sdcard/mmcblk0p6.backup bs=4096
dd if=/dev/block/mmcblk0p6 of=/sdcard/mmcblk0p6.backup bs=4096
2560+0 records in
2560+0 records out
10485760 bytes transferred in 1.391 secs (7538289 bytes/sec)
# dd if=/data/recovery.img of=/dev/block/mmcblk0p6 bs=4096
dd if=/data/recovery.img of=/dev/block/mmcblk0p6 bs=4096
1238+1 records in
1238+1 records out
5070963 bytes transferred in 0.509 secs (9962599 bytes/sec)
# rm /data/recovery.img
rm /data/recovery.img
# reboot
reboot

You did power+volume down+3D til vibrate then release power and hold volume down+3d til recovery right?
Sent from my LG-P925 using Tapatalk

CallMeAria said:
You did power+volume down+3D til vibrate then release power and hold volume down+3d til recovery right?
Sent from my LG-P925 using Tapatalk
Click to expand...
Click to collapse
I did the power+downvolume+3D multiple times. And then it finally worked AFTER I unplugged my phone from my laptop(it was low on battery and I didn't want to have it power off in the middle of flashing).
Thanks for your help!

Cant flash ClockworkMod Recovery
When i type the dd if=/data/recovery.img of=/block/mmcblk0p6 bs=4096 to flash over the clockworkmod, into my command promt it says 'cannot open for read: No such file or directory' and i dont know what im doing wrong.
I mean everything else seemed to workout fine. i downloaded the recovery image it said to save it but it was already saved to my computer after i downloaded it so i dont know if this could be the problem.
Then i used the adb push recovery.img/data command to push the recovery image to my phone, i think this might be where i messed up. After i put in the command a long list of text pops up on the command prompt. It starts out showing 'Android Debug Bridge version 1.0.26' then is followed by a long list of adb commands. Idk know if this is what its supposed to show.
Next i did the adb shell, su, dd if=/dev/block/mmcblk0p6 of=/sdcard/mmcblk0p6.backup bs=4096 command and that worked fine it said 2560+0 records out, 2560+0 records in 10485760 bites transfered in 0.413 secs and i actually found that file on my sdcard. So i think i did that right.
Next i tried to use the command 'dd if=/data/recovery.img of=/block/mmcblk0p6 bs=4096' and like i said earlier it just says 'cannot open for read: No such file or directory'
Lastly i tried the rm /data/recovery.img command and it said rm failed for /data/recovery.img, No such file or directory in the command prompt.
Im sorry i am new at this but i thought i followed the directions perfectly and any help anyone could give me would be greatly appreciated.

powers.jereme said:
When i type the dd if=/data/recovery.img of=/block/mmcblk0p6 bs=4096 to flash over the clockworkmod, into my command promt it says 'cannot open for read: No such file or directory' and i dont know what im doing wrong.
I mean everything else seemed to workout fine. i downloaded the recovery image it said to save it but it was already saved to my computer after i downloaded it so i dont know if this could be the problem.
Then i used the adb push recovery.img/data command to push the recovery image to my phone, i think this might be where i messed up. After i put in the command a long list of text pops up on the command prompt. It starts out showing 'Android Debug Bridge version 1.0.26' then is followed by a long list of adb commands. Idk know if this is what its supposed to show.
Next i did the adb shell, su, dd if=/dev/block/mmcblk0p6 of=/sdcard/mmcblk0p6.backup bs=4096 command and that worked fine it said 2560+0 records out, 2560+0 records in 10485760 bites transfered in 0.413 secs and i actually found that file on my sdcard. So i think i did that right.
Next i tried to use the command 'dd if=/data/recovery.img of=/block/mmcblk0p6 bs=4096' and like i said earlier it just says 'cannot open for read: No such file or directory'
Lastly i tried the rm /data/recovery.img command and it said rm failed for /data/recovery.img, No such file or directory in the command prompt.
Im sorry i am new at this but i thought i followed the directions perfectly and any help anyone could give me would be greatly appreciated.
Click to expand...
Click to collapse
I did this the exact same way and got the directory not found or no such directory. I have the recover.img file but when I type in dd if=/data/recovery.img of=/block/mmcblk0p6 bs=4096 to flash it just doesn't work. What am I doing wrong or where do I need to put the recovery.img after downloading?

Rabidaries said:
I did this the exact same way and got the directory not found or no such directory. I have the recover.img file but when I type in dd if=/data/recovery.img of=/block/mmcblk0p6 bs=4096 to flash it just doesn't work. What am I doing wrong or where do I need to put the recovery.img after downloading?
Click to expand...
Click to collapse
Recovery.img needs to be in
/sdcard
Sent from my LG-P925 using XDA App

Rabidaries said:
I did this the exact same way and got the directory not found or no such directory. I have the recover.img file but when I type in dd if=/data/recovery.img of=/block/mmcblk0p6 bs=4096 to flash it just doesn't work. What am I doing wrong or where do I need to put the recovery.img after downloading?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1363132
Go there and follow those directions they are the easiest way to install cwm. Good luck

I'm getting an error message that says cannot open for read: No such file or directory. I've already download the recovery.img and followed the steps from here http://forum.xda-developers.com/showthread.php?t=1363132

dd Recovery Partition [Figured it Out]

Hey, I'm looking to find the proper location for the recovery partition so I can dd an image to it.
cat /proc/mtd shows mtd1 but I haven't done this on an mtd device before so I'm wondering if dd if=/my/recovery.img of=/dev/mtd/mtd1 will actually work or if it will mess up my stuff.
Thanks!
NM, I'm just going to use flash_image instead. Ignore me.

restoring erased data

i installed wishnu app https://play.google.com/store/apps/details?id=edu.phystech.wishnu&feature=search_resultand tried to run it but it doesnt work , then i remove the app by go to applications manager>wishnu then clear data and uninstall
after that all my data is gone i dont know how
sdcard and internal card but my app doesnt erased
how can i fix or restore my data and files ?
plz help :crying:

Try to reboot and check once.
or use undelete from the playstore

Hi,
with dd command you can extract an image of your sdcard or over & after use data recovery forensics tool (foremost).
ex: dd (try 'mount' for identify block before)
Code:
#dd if=/dev/<blockdevice> of=/extract_image bs=4096
# foremost -t all -i extract_image
or with app but i have no experimented any app
manually is the best way & sure

nokiamodeln91 said:
Try to reboot and check once.
or use undelete from the playstore
Click to expand...
Click to collapse
thanx
but it doesnt work

karamelos said:
Hi,
with dd command you can extract an image of your sdcard or over & after use data recovery forensics tool (foremost).
ex: dd (try 'mount' for identify block before)
Code:
#dd if=/dev/<blockdevice> of=/extract_image bs=4096
# foremost -t all -i extract_image
or with app but i have no experimented any app
manually is the best way & sure
Click to expand...
Click to collapse
can you explain more
i am linux user i can use terminal
but android terminal i dont know how it work

tsar007 said:
can you explain more
i am linux user i can use terminal
but android terminal i dont know how it work
Click to expand...
Click to collapse
Yes of course and with pleasure
It's not android terminal command.
On your Linux (for exemple ubuntu) laptop open terminal:
Code:
$sudo apt-get install foremost
mount your phone on your pc & list disk (mass storage simply way)
Code:
#fdisk -l
or with mount command
Your sdcard for this example named: sdb
Copier sdb with dd command & nane it extract_image. option bs=4096 it's block size & maximizing execution speed significantly.
more option in man (root)
Code:
#dd if=/dev/sdb of=/extract_image bs=4096
Foremost extract (root):
Code:
#foremost -t all -i extract_image
-t - specify file type/ here "all" but you can specifies jpg mp4 pdf etc....
-i - specify input file/ your backup
Foremost create folder but you must be root for open it (/temp directory is good work spaces)
or (not good but simply)
Code:
gksudo nautilus
Enjoy

karamelos said:
Yes of course and with pleasure
It's not android terminal command.
On your Linux (for exemple ubuntu) laptop open terminal:
Code:
$sudo apt-get install foremost
mount your phone on your pc & list disk (mass storage simply way)
Code:
#fdisk -l
or with mount command
Your sdcard for this example named: sdb
Copier sdb with dd command & nane it extract_image. option bs=4096 it's block size & maximizing execution speed significantly.
more option in man (root)
Code:
#dd if=/dev/sdb of=/extract_image bs=4096
Foremost extract (root):
Code:
#foremost -t all -i extract_image
-t - specify file type/ here "all" but you can specifies jpg mp4 pdf etc....
-i - specify input file/ your backup
Foremost create folder but you must be root for open it (/temp directory is good work spaces)
or (not good but simply)
Code:
gksudo nautilus
Enjoy
Click to expand...
Click to collapse
i did execute this
Code:
dd if=/dev/sdc of=/extract_image bs=4096
this is the output
Code:
2904064+0 records in
2904064+0 records out
11895046144 bytes (12 GB) copied, 635.841 s, 18.7 MB/s
then i same directory i did execute this
Code:
foremost -t all -i extract_image
and this is the output
Code:
Processing: stdin
i wait for more than 3 hours and same thing ,nothing happened
look
there is another application "photorec"
in terminal i did execute
Code:
photorec
its look like a guide
after it done i opened the directory and i found folders i opened one and there is txt files and zip files and tar files
i didnt know how i used it

tsar007 said:
Code:
foremost -t all -i extract_image
Click to expand...
Click to collapse
This's a basique commande try with other option
first command Generate audit file and print to the screen, the seconde extract with verbose
Code:
$sudo foremost -avT extract_image
$sudo foremost -vT -t all -i extract_image
-a write all headers
-v Verbose
-T delete the output dir when you running multiple times
For photorec:
A good wiki & site
After using photorec

karamelos said:
This's a basique commande try with other option
first command Generate audit file and print to the screen, the seconde extract with verbose
Code:
$sudo foremost -avT extract_image
$sudo foremost -vT -t all -i extract_image
-a write all headers
-v Verbose
-T delete the output dir when you running multiple times
For photorec:
A good wiki & site
After using photorec
Click to expand...
Click to collapse
thanx a lot :laugh:

For future
Foremost is a great tool simply & faster but photorec detect more files & just read partitions
For sdcard (photos, PDF...) foremost enough
Sent from my GT-N7000 using xda app-developers app

[MOD] Custom Boot Splash

Typically users beat me to the punch on things such as this. But no one has yet to do so, so here it is.
How to extract your param partition:
Code:
It's located in /dev/block/sda4. On device terminal or in adb terminal as root run,
dd if=/dev/block/sda4 of=/sdcard/param.bin bs=4096
Now that your param partition has been dumped you can copy it off the device as I do to work with it. Untar it with this command on linux:
Code:
mkdir /param
cd param
tar xf /path/to/param.bin
Once its untared to the param directory, you will see the contents. logo.jpg being the file you wish to change.
Once you have found/made a proper logo/splash in the proper resolution of 1440x2560 copy it to the param folder overwriting the old logo.jpg, and run this command in the param folder to pack it back up:
Code:
tar cf - `ls | sort -t.` > /path/to/where/you/want/to/save/param.bin
NOTE: The param partition has limited space, so keep this in mind. I have successfully used a 400kb jpeg with out issues. I wouldn't go much more then that.
Place the param.bin back on your sdcard and run the following to flash it:
Code:
dd if=/sdcard/param.bin of=/dev/block/sda4 bs=4096
Reboot and enjoy.
Users wishing to deploy all these commands on device (if you don't run linux) here is a script I made, tested and working to do so. Place files on device accordingly.
Code:
#!/sbin/busybox sh
# Extracting param partition
dd if=/dev/block/sda4 of=/sdcard/param.bin bs=4096
mkdir /sdcard/param
cd /sdcard/param
tar xf /sdcard/param.bin
# Replaceing logo.jpg, repacking and writing back to device
cp -f /sdcard/logo.jpg /sdcard/param/logo.jpg
rm -f /sdcard/param.bin
tar cf - `ls | sort -t.` > /sdcard/param.bin
dd if=/sdcard/param.bin of=/dev/block/sda4 bs=4096
Attached you will find a flashable zip of a custom boot screen i made. You're all welcome to use. As well as the Stock param.bin in case users wish to go back. And the image I made for the custom boot splash I'm attaching.

-Mr. X- said:
Typically users beat me to the punch on things such as this. But no one has yet to do so, so here it is.
How to extract your param partition:
Code:
It's located in /dev/block/sda4. On device terminal or in adb terminal as root run,
dd if=/dev/block/sda4 of=/sdcard/param.bin bs=4096
Now that your param partition has been dumped you can copy it off the device as I do to work with it. Untar it with this command on linux:
Code:
mkdir /param
cd param
tar xf /path/to/param.bin
Once its untared to the param directory, you will see the contents. logo.jpg being the file you wish to change.
Once you have found/made a proper logo/splash in the proper resolution of 1440x2560 copy it to the param folder overwriting the old logo.jpg, and run this command in the param folder to pack it back up:
Code:
tar cf - `ls | sort -t.` > /path/to/where/you/want/to/save/param.bin
NOTE: The param partition has limited space, so keep this in mind. I have successfully used a 400kb jpeg with out issues. I wouldn't go much more then that.
Place the param.bin back on your sdcard and run the following to flash it:
Code:
dd if=/sdcard/param.bin of=/dev/block/sda4 bs=4096
Reboot and enjoy.
Users wishing to deploy all these commands on device (if you don't run linux) here is a script I made, tested and working to do so. Place files on device accordingly.
Code:
#!/sbin/busybox sh
# Extracting param partition
dd if=/dev/block/sda4 of=/sdcard/param.bin bs=4096
mkdir /sdcard/param
cd /sdcard/param
tar xf /sdcard/param.bin
# Replaceing logo.jpg, repacking and writing back to device
cp -f /sdcard/logo.jpg /sdcard/param/logo.jpg
rm -f /sdcard/param.bin
tar cf - `ls | sort -t.` > /sdcard/param.bin
dd if=/sdcard/param.bin of=/dev/block/sda4 bs=4096
Attached you will find a flashable zip of a custom boot screen i made. You're all welcome to use. As well as the Stock param.bin in case users wish to go back. And the image I made for the custom boot splash I'm attaching.
Click to expand...
Click to collapse
Very nice! Thanks

If your phone is showing the "Custom (unlocked)" icon, will this override that?

Does this overwrite the carrier boot screen.

cambunch said:
If your phone is showing the "Custom (unlocked)" icon, will this override that?
Click to expand...
Click to collapse
In download mode? no it will not.
Thoth33 said:
Does this overwrite the carrier boot screen.
Click to expand...
Click to collapse
If the carrier put their logo in the param yes. if its a kernel boot animation no.

-Mr. X- said:
In download mode? no it will not.
Click to expand...
Click to collapse
During a regular boot. This is the first image that you see when powering on a phone, correct?

cambunch said:
During a regular boot. This is the first image that you see when powering on a phone, correct?
Click to expand...
Click to collapse
correct

This looks awesome! I'll have to prep an image to try out!
Edit:
After giving this a try, I appear to have managed to brick my phone. It seems that the only thing I can boot into is Download mode, and reflashing the firmware has not fixed this. Any ideas on how to resolve this? Much appreciated!!
Edit 2:
I saved myself with the Smart Sync (or whatever it's called) program on my PC. I was only able to do it though because I had written down the "Serial Number" for "just in case" purposes some time ago. I'm actually going to do a separate post to make this point for anyone who has similar issues but not from modifying boot splash.

The attached zip files work perfect on my S6 Edge. I unzipped the file, copied param.bin to my sdcard and used dd from the shell. Still trying to get a custom image to work. Getting a grey screen when I replace logo.jpg with my own. Any ideas?
Thanks again for sharing this -Mr. X-.

@-Mr. X-
Could you tell me which software you used to make your custom logo.jpg? I'm using photoshop on mac, however, everything made on this leads to the gray screen.
Thank you.

Can you please add 'powered by android' with new bugdroid icon on the bootsplash
Sent from my SM-G920I using Tapatalk

Will this work on the 925T edge?

I used Gimp, then i opened the picture in Microsoft Paint and re-saved it. I also ran into this but didn't know if Gimp was the cause but., this method worked for me.
It should also work on the edge but ensure your param partition is sda4 just to be safe.

-Mr. X- said:
I used Gimp, then i opened the picture in Microsoft Paint and re-saved it. I also ran into this but didn't know if Gimp was the cause but., this method worked for me.
It should also work on the edge but ensure your param partition is sda4 just to be safe.
Click to expand...
Click to collapse
Will do

The grey screen seems to be an issue while packing the files back with tar on Mac. I used photoshop on mac to make logo.jpg and packed it using tar on ubuntu. Works on 925I. And sda4 is the partition on edge as well for the bootsplash. Thanks for the help.

How to you get this to work little confused. Do you unzip the file or do you flash the zip

UAAO
Enviado desde mi SM-N910C mediante Tapatalk

Confuse bro .
Splaind tutorial

Can seone explaim how to change the splash screen thanls

ob1silvia said:
Can seone explaim how to change the splash screen thanls
Click to expand...
Click to collapse
Hi,
You can flash the zip file in post 1, with custom recovery..
Work perfect here, thx @-Mr. X-

How to backup a partition

How to backup - let's say boot - partition to a fastboot flashable file (*.img) format?

For example:
Code:
dd if=/dev/block/platform/hi_mci.0/by-name/boot of=/sdcard/boot.img
and so on.

Kostyan_nsk said:
For example:
Code:
dd if=/dev/block/platform/hi_mci.0/by-name/boot of=/sdcard/boot.img
and so on.
Click to expand...
Click to collapse
Thanks. So fastboot is using dd images. Please do confirm.
Regards.

You can use only boot and recovery images extracted by dd for flashing via fastboot.

Kostyan_nsk said:
You can use only boot and recovery images extracted by dd for flashing via fastboot.
Click to expand...
Click to collapse
Thanks

Kostyan_nsk said:
For example:
Code:
dd if=/dev/block/platform/hi_mci.0/by-name/boot of=/sdcard/boot.img
and so on.
Click to expand...
Click to collapse
I have done the backup to the image file as you have suggested.
I have copied image file to the linux computer, but when I try to mount the image file I get:
mount -o loop boot_orig_B830.img /mnt/boot/
mount: /dev/loop0 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/loop0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
What is the file system for this image?
Length of the image file is:
ls -l boot_orig_B830.img
-rw-rw-r-- 1 test test 16777216 Lis 13 22:04 boot_orig_B830.img

For Linux: google "unpackbootimg", "gunzip" and "cpio".
For Windows: google "AndImgTool".