[How To] Fix md5 mismatch nandroid restore

[dwreck420]

I have this problem with restoring my backup. I tried the fix as was detailed, even had to download md5sum.exe because I am working on a Windows 7 machine, but I always get "md5sum: not found" error. Can anyone please guide me on what I can do to get this working. I copied md5sum.exe to C:\Windows\System32 and also to the sdk\platform-tools folder, still getting the error.
Thanks all.

EDIT: I found that I had to go into recovery first to run the fix. Only then did the md5sum command work and created a fresh new nandroid.md5, and got my backup restored. Thanks to all who made this possible. My sincerest thanks.

hey im getting the same error. what do you mean you went into recovery first to run the fix first?

 

[dwreck420]

hey im getting the same error. what do you mean you went into recovery first to run the fix first?

lol like you, just kidding!

put md5.exe in sys32, boot to clockwork mod, connected usb, open cmd shell in win7, execute commands: md5 success, backup restored.

 

[nolimitzz]

nice post, helped me alot, thanks!

 

[elvis56]

Just ran into this problem as well. I think it has something to do with the Hboot version.

Anyway, people using windows based tools probably have to manually edit the nandroid.md5 file. The checksum HAS TO BE in lowercase character(as someone else pointed out before as well) , there HAVE to be 2 spaces after the checksum and you do not need a checksum of .android_secure.img.

And, maybe most important of all, if the filesize of nandroid.md5 is anything other than 267 bytes the file will not work. As described in the documents from the thread below it's best to start from an existing nandroid.md5 file and copy/paste the correct checksums.

The files linked in this thread will probably help windows based users. http://www.droidforums.net/forum/hacking-help/33355-help-clockwork-md5-mismatch-recovery-2.html

 

[potcryan]

Just in case anyone runs into the same problem I did when trying to restore- do NOT name your backup with a "/" in it. I named mine with the date ie 5/2 and it created a folder named 2 which is where everything saved. Finally figured out that's why I couldn't restore, heh.

 

[D!T]

My backup has no nandroid.md5 and doing the command doesn't fix it. What to do?

EDIT: Got it, thanks a ton!

I am probably wrong here, but there is a disturbing pattern in that the last backup made by ClockworkMod (3.0.0.5) has lately failed every single time with the md5sum error.

Stepping through the instructions, I saw that nandroid.md5 didn't even exist in the directory (and therefore could not be deleted).

Furthermore, I ran a second backup before making any changes and miraculously the former (broken) backup suddenly worked again.

 

[major_works]

DO NOT PUT ANY SPACES IN YOUR FILE STRUCTURE. I did and it gave me an "MD5 Check Sum Error" took the space out and bam it worked.

I wanted to restore a backup today. It was the first time I'd tried it. I immediately ran into this "MD5 mismatch" thing. I had no idea that I shouldn't have put spaces in my backup file names. I edited out the spaces, tried it again, and it worked for me.

 

[NJMoreno22]

I had a md5 mismatch and was freaking out. Turned out that the folder name for my backup couldn't have spaces in it...

This was my problem too. Renamed with no spaces and restore completed successfully. Thanks man

 

[Araf]

i figured i would post this fix here in case anyone else ran into this problem. This is assuming you did not change the folder names and let clockworkmod create them. I haven't had it happen until today, but it's not a nice message to see when you are trying to do a restore.

checking md5 sums...
Md5 mismatch!

to fix this problem use the code below. Substitute the final folder name for the backup you need to fix.

adb shell
# cd /sdcard/clockworkmod/backup/2010-06-29.20.22.53
# rm nandroid.md5
# md5sum *img > nandroid.md5

when that finishes, re-run the restore and everything should be fine.

note: As rpearl stated, there could be something really wrong with your nandroid, so use this tutorial as a learning experience and not a fix-all. In my case, everything was fine after restoring. However, that may not always be the case. Do this with caution.

big thank you!!

EDIT:
After follow all the procedure, here's the result in my clockworkmod recovery (v3.0.2.8):
1. Checking MD5 sums is OK
2. Restoring system is OK
3. Restoring data is not OK, there is message: ".android_secure.img not found. Skipping restore /sdcard/.android secure.
4. Restoring cache is OK
5. Backup complete

Then after reboot, all my data is not restore as expected. I am afraid my data is gone :-(
Can someone help me?

 

[ACD168]

big thank you!!

EDIT:
After follow all the procedure, here's the result in my clockworkmod recovery (v3.0.2.8):
1. Checking MD5 sums is OK
2. Restoring system is OK
3. Restoring data is not OK, there is message: ".android_secure.img not found. Skipping restore /sdcard/.android secure.
4. Restoring cache is OK
5. Backup complete

Then after reboot, all my data is not restore as expected. I am afraid my data is gone :-(
Can someone help me?

clockworkmod recovery (v3.0.2.8): is this for the incredible?

 

[morgan39]

Thankfully

I had renamed the backup to know that rom but there were spaces left; I returned to rename without spaces and following adb commands, voilà: I was able to restore it without problems.
I've saved so much time with headache ¡¡¡¡¡¡¡¡¡¡
Thanks for sharing .............

 

[GirLuvsDroid]

The only thing I have to add is that you don't need Java if your only going to be using ADB, but that's honestly just me being particular.

Secondly, since I didn't see this get brought up in the past posts, the final folder from the ADB commands isn't necessarily going to be labeled the same as the OP. The actual backup folder name is based on the current date/time when the backup was made, so I would suggest doing the following:

adb shell
cd /sdcard/clockworkmod/backup
ls -l (which will list all your backup's)
cd *backup folder you're trying to use*
rm nandroid.md5
md5sum *.img > nandroid.md5

Thank you DonJuan and ihtfp69 for this fix. I found this thread by searching after I got an MD5 mismatch on my Nook Color. I ran DonJuan's script from Terminal Emulator on the Nook Color and it worked like a charm. My backup is restored and I'm up and running again. You guys are lifesavers!!!!!

 

[xTFGx]

Thanks so much!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

hijust fixed this prob on my device. All you have to do is goin to your sd card andopen folder "clockworkmod" now you should have a folder called "backup" in this folder you should have a folder (dosen't matter what its called, preferably the name of youy back up) and within that folder should be the following: Boot.img, system.img, cache.img, data.img, recovery.img and nandroid.md5. Thats it! Is you have more folders that you have to go through to get to the .img files than thats the problem. Make sure it is as above.... All the best!

 

[Dacoco]

Simple but great! Thank you very much

 

[woodpeckerlo]

Rename your backup folder how ever u like just don`t put any spaces in name!!!!!!!!!!!!!!!! It work`s like a charm!!!!!!!!!!!!!!!

 

[Neo]

Rename your backup folder how ever u like just don`t put any spaces in name!!!!!!!!!!!!!!!! It work`s like a charm!!!!!!!!!!!!!!!

+1 that. I never had a problem with the spaces until after flashing this one particular rom and when it had issues, could not restore from any of my backups from 8 different roms. Turns out I had spaces in the folders that I kept each individual rom in. Take the spaces out and you should be good to go!

 

[neil_swann80]

Ignore... wrong thread.

 

[pacut]

well well...I renamed my ROM image and put some spaces, and when I need it I got MD5 check error. It is clear: non spaces into string name of the backup file.

Question is: has it the be identical name to original backup from CWM, or could it be anything I want just with no spaces ?

Thanks

 

[omer1112]

I had a md5 sumcheck error as well. I tried the adb shell commands. It didnt do anything. i explored my backup folder and two of my backups that aren't working actually only have two files in the folder. boot.img and recovery.img.

Any idea why my nandroid backups got screwed like this? What can I do to prevent this? Never ran into this problem before and i've done atleast 50+ nandroids throughout different phones.

 

[im.nick.hello]

ok so i've been having some problems with not booting past the splash and so on... so i made a backup then ran a ruu

when i tried to restore my backup after flashing the ruu and re rooting i got a md5 mismatch, i think my backup is probubly corrupt.

what will happen if i restore it anyway with this method?