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Hi all!
I'm sure many of you are confident on doing this, but some are not. This quick how-to is for the scenario when you have Froyo installed with Recovery3e which is the default recovery and you're trying to make a backup of your firmware in Rom Manager without flashing another kernel via Odin.
You click on "backup", the phone reboots to ClockWorkMod Recovery. Or not. You will see Recovery3e popping up with an error message telling you that the package is not signed. Fear not, here's the solution:
Pre-requisites:
Phone must be rooted
Rom Manager installed
ClockWorkMod Recovery installed from within Rom Manager
After getting the error message, just take the battery out and simply apply volume UP + Home button + Power button to get to recovery and CWM will come up, doing what you've asked it for!
Just installing CF-Root with Odin is the simplest solution for me which roots your device and installs ClockworkMod
http://forum.xda-developers.com/showthread.php?t=788108
Is there any useful advantage to loading the latest version of CWM using the market app?
I originally flashed mine with CF-Root, but since have flashed the speedmod kernel and that seems to have changed it again.
alexhull24 said:
Is there any useful advantage to loading the latest version of CWM using the market app?
I originally flashed mine with CF-Root, but since have flashed the speedmod kernel and that seems to have changed it again.
Click to expand...
Click to collapse
I have just updated my rom manager and the change is a new layout with icons and it looks much nicer
The guide is for those, who don't want to change the factory kernel in the rom. Flashing CF-Root/SpeedMod/Voodoo or whatever you sympathize with is the best solution I agree, as it comes with several benefits aside rooting, but not everyone wants to do it that way.
I would add, just to be sure, after backup copy the backup file to external SD card..
myrddral said:
Hi all!
I'm sure many of you are confident on doing this, but some are not. This quick how-to is for the scenario when you have Froyo installed with Recovery3e which is the default recovery and you're trying to make a backup of your firmware in Rom Manager without flashing another kernel via Odin.
You click on "backup", the phone reboots to ClockWorkMod Recovery. Or not. You will see Recovery3e popping up with an error message telling you that the package is not signed. Fear not, here's the solution:
Pre-requisites:
Phone must be rooted
Rom Manager installed
ClockWorkMod Recovery installed from within Rom Manager
After getting the error message, just take the battery out and simply apply volume UP + Home button + Power button to get to recovery and CWM will come up, doing what you've asked it for!
Click to expand...
Click to collapse
hi, i did the same and got the update.zip in my phone but when i try to apply it during 3e recovery, i always get the <E:failed to verify whole-file signature xxxxx Installation abort>
can anyone help me with this issue?
many thanks in advance.
p/s: the phone is already rooted and rom manager installed with the latest CWM recovery 2.5.1.2
current firmware 2.2, kernel version 2.6.32.9, build number froyo.DXJPE
same issue as last post, I have successfully rooted the phone with oneclick, I have installed rom manager, I have flashed CWR (v2.5.1.2) phone is GT-I9000, Firmware is 2.2.1, kernel 2.6.32.9, build FROYO.BOJS5 and baseband is I9000XXJPY
I checked, root is working and rom manager got the proper root access
if I access "backup your current ROM" it takes me to the recovery v3 mode, where there is no backup options. if I try to apply the update.zip, I got the error signature not verify. I remove the battery, I reinsert it and the phone reboot to the recovery3, I apply the update.zip again and get the same messages, again and again.
I could probably install CF-ROOT but I would like to do a nandroid backup first and this is never presented in the options
reup
dereut said:
same issue as last post, I have successfully rooted the phone with oneclick, I have installed rom manager, I have flashed CWR (v2.5.1.2) phone is GT-I9000, Firmware is 2.2.1, kernel 2.6.32.9, build FROYO.BOJS5 and baseband is I9000XXJPY
I checked, root is working and rom manager got the proper root access
if I access "backup your current ROM" it takes me to the recovery v3 mode, where there is no backup options. if I try to apply the update.zip, I got the error signature not verify. I remove the battery, I reinsert it and the phone reboot to the recovery3, I apply the update.zip again and get the same messages, again and again.
I could probably install CF-ROOT but I would like to do a nandroid backup first and this is never presented in the options
reup
Click to expand...
Click to collapse
Same here!
On same ROM...
There is an excellent guide on this forum, and on another one that specify that galaxy s with froyo 2.2.1 and recovery3 needs to install CF-ROOT :
http://www.addictivetips.com/mobile/how-to-install-clockworkmod-recovery-on-samsung-galaxy-s-i9000
and
http://forum.xda-developers.com/showthread.php?t=1035995
what this thread here is about is how NOT to need CF-ROOT
this is a bit like biting your own tail. I think the most important part for me is: if you flash another kernel, can you revert to your previous one as it is not possible to do a nandroid backup before flashing the kernel
for warranty sake, it would be important to be able to revert to a nandroid backed-up ROM, then revert to recovery3 than unroot the phone before bringing it back in case of need of repair
I found an app, sgs kernel flasher, it might be possible to backup the original kernel this way
so it would go like this :
root the phone (onclick root worked well with my phone)
install rom manager
install sgs kernel flasher
backup the kernel
flash CF-ROOT as describe in http://www.addictivetips.com/mobile/how-to-install-clockworkmod-recovery-on-samsung-galaxy-s-i9000 (the clearest guide I found so far)
flash CWR (or is it not necessary with CF-ROOT)
do a nandroid backup
save preciously the backup and the previously backed up kernel
play with the new toys .....
when warranty is needed:
restore the nandroid backed-up ROM
revert to original kernel with sgs kernel flasher
unroot with oneclick
can someone with experience revue this list and tells us if it sound correct ?
thanks
reup
I went a bit further, following my own post just above :
my phone is already rooted and has ROM MANAGER installed
I used the first option of ROM manager and flash the last CWR. that has created a update.zip on my sdcard, but I cannot use it as I am still on recoveryv3
I backed up my kernel using "sgs kernel flash" (found on market)
I flashed a new kernel : CF-Root-XW_XEN_JS5-v1.3-BusyBox-1.17.1.zip. this is because my phone build is build FROYO.BOJS5 (noticed the 2 JS5)
rebooted the phone, I open ROM Manager and went to "reboot into recovery"
there I was on recoveryv2, with very little options but I "apply update.zip" twice (first one failed)
I rebooted and suddenly I had access to the new flashed recovery, CWR with backup options
I did a nandroid backup
one trick, the OK button became the right most button, and not the center one anymore
one think left to do, revert to stock samsung with recovery v3. to test the complete process
another trick, the CF-ROOT kernel came package into a zip files and when trying to flash it with sgs kernel flash it fails. you need to unzip the file first, it will gives you a .tar file, this one can be flash successfully
so all together, we can flash a new kernel all from the phone, without ODIN and without a PC (windows, Linux or other)
reup
dereut said:
I went a bit further, following my own post just above :
my phone is already rooted and has ROM MANAGER installed
I used the first option of ROM manager and flash the last CWR. that has created a update.zip on my sdcard, but I cannot use it as I am still on recoveryv3
I backed up my kernel using "sgs kernel flash" (found on market)
I flashed a new kernel : CF-Root-XW_XEN_JS5-v1.3-BusyBox-1.17.1.zip. this is because my phone build is build FROYO.BOJS5 (noticed the 2 JS5)
rebooted the phone, I open ROM Manager and went to "reboot into recovery"
there I was on recoveryv2, with very little options but I "apply update.zip" twice (first one failed)
I rebooted and suddenly I had access to the new flashed recovery, CWR with backup options
I did a nandroid backup
one trick, the OK button became the right most button, and not the center one anymore
one think left to do, revert to stock samsung with recovery v3. to test the complete process
another trick, the CF-ROOT kernel came package into a zip files and when trying to flash it with sgs kernel flash it fails. you need to unzip the file first, it will gives you a .tar file, this one can be flash successfully
so all together, we can flash a new kernel all from the phone, without ODIN and without a PC (windows, Linux or other)
reup
Click to expand...
Click to collapse
You and me are in exactly the same situation. To do nandroid backup for warranty reason we have to brake that same warranty.
Only I didnt use cf-root, I went for hardcore speedmod...
If you haven't already done so, install Rom Manager and flash Clockworkmod Recovery. It doesn't replace the actual recovery partition or the files that restore it so it won't affect flashing the update.
If you received an OTA notice don't flash it. You can go into /system/cache and copy it, or download it from the links in other threads. Place the update zip (no need to rename it) on the root of your sd card.
To install the update you must be fully stock (root is okay). That means any changed or deleted system files (including bootanimation.zip) will prevent the update from flashing. You will get a status 7 error. If you used Bloat Freezer you must defrost all before flashing the zip or it will error.
Also, have available whatever zip you used to root your Nexus one (i.e., su.zip or superboot, etc.) and put on the root of your sd card.
Once your system is back to stock reboot into CWM recovery and select flash zip from sd card. Then flash the 2.3.6 update file. Then DO NOT reboot yet. Now flash your root zip. After you have flashed both the udpate and the root zip you can reboot your phone. No need to wipe anything.
When your phone reboots you will have 2.3.6 and it will still be rooted. No bootloader gymnastics necessary.
I am using stock (almost) version of GRJ22 , but unfortunatelly I got the status 7 error when I tried to apply the update via clockworkmod recovery. I guess that's because I have already integrated some system apps into ROM using Titanium Backup.
So, if I flash stock vanilla GRJ22, then SU, then GRK39F (the incremental update) and finally SU again, won't that do the job??
Thanks..
Nikos_s3 said:
I am using stock (almost) version of GRJ22 , but unfortunatelly I got the status 7 error when I tried to apply the update via clockworkmod recovery. I guess that's because I have already integrated some system apps into ROM using Titanium Backup.
So, if I flash stock vanilla GRJ22, then SU, then GRK39F (the incremental update) and finally SU again, won't that do the job??
Thanks..
Click to expand...
Click to collapse
Yes, that will do nicely. Just need to get back to GRJ22 stock before you can flash the udpate. The updater-script does an assert and checks the md5 checksum of every system file before it allows the update to flash. If it doesn't find all stock files or checksums don't match what it is looking for, you get a status 7 error and the line above will show which file it stopped on. So you can look at those messages and keep restoring files it wants (if only a few) without having to flash completely back to stock.
I guess that would take much time, as almost all of my google apps are integrated into ROM...so I will try to follow the procedure I wrote earlier and if that won't work, I will try a ready stock,rooted ROM (Fireb33 has done it already)..
thanks mate..
Why so complicated?
You can update to 2.3.6 AND keep root even much more simple:
1.) Update from OTA to 2.3.6 (and loose root).
2.) Flash Superboot from Madaco and get back root.
Done in 3 minutes.. No need to flash, recover, overwrite and/or whatever, no need for ADB, no messing:
Code:
https://bexton.net/2011/09/24/root-access-for-nexus-one-on-android-2-3-6-grk39f-superboot/
Bexton said:
You can update to 2.3.6 AND keep root even much more simple:
1.) Update from OTA to 2.3.6 (and loose root).
2.) Flash Superboot from Madaco and get back root.
Done in 3 minutes.. No need to flash, recover, overwrite and/or whatever, no need for ADB, no messing:
Code:
https://bexton.net/2011/09/24/root-access-for-nexus-one-on-android-2-3-6-grk39f-superboot/
Click to expand...
Click to collapse
That's only for those who have the bootloader unlocked?
_raz_ said:
That's only for those who have the bootloader unlocked?
Click to expand...
Click to collapse
Well, yep. That method indicates your (phones) bootloader is unlocked. But as it's the N1, unlocking the bootloader is just 19 (up to 25) characters away -> "fastboot(-linux) oem unlock".
Edit: By the way, i looked up that post from an android platform engineer:
Code:
groups.google.com/group/android-platform/msg/b7d83992dd92accb?dmode=source
The N1 is just made for that.
tried superboot but wifi down
I flashed the update for 2.3.6 and then superboot but my wifi gives an error when I try to turn it on.
New Superboot file for GRK39F?
Is there a new Superboot file for the new OTA update?
jboxer said:
If you haven't already done so, install Rom Manager and flash Clockworkmod Recovery. It doesn't replace the actual recovery partition or the files that restore it so it won't affect flashing the update.
If you received an OTA notice don't flash it. You can go into /system/cache and copy it, or download it from the links in other threads. Place the update zip (no need to rename it) on the root of your sd card.
To install the update you must be fully stock (root is okay). That means any changed or deleted system files (including bootanimation.zip) will prevent the update from flashing. You will get a status 7 error. If you used Bloat Freezer you must defrost all before flashing the zip or it will error.
Also, have available whatever zip you used to root your Nexus one (i.e., su.zip or superboot, etc.) and put on the root of your sd card.
Once your system is back to stock reboot into CWM recovery and select flash zip from sd card. Then flash the 2.3.6 update file. Then DO NOT reboot yet. Now flash your root zip. After you have flashed both the udpate and the root zip you can reboot your phone. No need to wipe anything.
When your phone reboots you will have 2.3.6 and it will still be rooted. No bootloader gymnastics necessary.
Click to expand...
Click to collapse
I want to update to gingerbread and looking for the proper guidance going forward. I've done some looking around the forums but i'm still unclear if i need to unroot or install a stock build, etc. What i know is the phone is rooted and sim unlocked. How can i check to see if the bootloader is open/locked?
Current specs:
android version 2.2.1
Baseband 32.41.00.32U_5.08.00.04
Kernal Version 2.6.35.9-cyanogenmod
Mod Version: Cyanogenmod-6.1.1-N1
Build: FRG83D
edit:
Please treat me like an idiot and walk me through this process. It's be utterly frustrating and I'm a stone's throw away from busting out my Nokia 3390 (equipped with led disco keypad).
If your bootloader is unlocked you will see an unlocked padlock on the boot up screen...
Okay First of all download the following files
a)http://android.clients.google.com/packages/ota/google_crespo/VQ8PQk_V.zip (4.0.3 OTA)
b)http://android.clients.google.com/p...a25375426.signed-soju-ota-189904.1ada2537.zip (2.3.6 Official I9020T Build)
c)http://bit.ly/su2361ef (SU flashable)
d)http://forum.xda-developers.com/showthread.php?t=988686 (Grab recovery form this thread)
e)http://developer.android.com/sdk/index.html (Grab the android SDK installer)
f)http://attachments.xda-developers.com/attachment.php?attachmentid=687157&d=1313224429 (Radio file only required for I9020A)
Okay so when done with all that proceed as follows
1) Backup your current apps using Titanium Backup (Optional/Recommended)
2) Backup(Nandroid) your rom using backup option in CWM (Optional/Recommended)
3) Do a full wipe, wipe sdcard, system, data, cache Transfer a,b,c,f to your phone.
4) Flash the 2.3.6 Official I9020T Build you had downloaded using the install zip option in CWM (IMP-DO NOT REBOOT RIGHT NOW)
5) Flash the flashable SU file you had downloaded and then reboot.
6) Once your phone is on, continue to set up your account or skip it as you wish. (Optional)
7) Open up market, download the latest SU app, Voodoo OTARootKeeper, Titanium Backup and any other app you use that requires root.
8) Open the updated SU app, hit menu button and click preferences, go all the way down, click on su binary(tap to check for updates) , and make sure it updates to v3.0.3
9) After that is done, open and allow root permissions to all your root apps. (This is important)
9.5) Run Voodoo OTARootKeeper and click on protect root, make sure all options get checked.
10) Turn off phone, keep volume up and power pressed to boot into fastboot.
11) Select recovery with volume buttons and use power to launch.
12) Once you see a android bot image and an arrow image, keep volume up pressed and press power once, then you'll see some options appear.
13) Select apply update option and find the official 4.0.3 OTA file you had downloaded and flash. Reboot.
14) Once you have booted into ICS, go to Voodoo OTARootKeeper and select resture Root, all options should now be ticked, if not something went wrong.
15) Voila, you have root. Now to get back CWM recovery you can follow this -
i) Place the recovery img file in the android sdk platform-tools folder
ii) Switch to the directory where you unzipped the Android SDK & go to "tools"
iii) Then type "fastboot flash recovery yourfilename.img" & hit enter
iv) That should do it.
v) Optionally you may do it form Rom Manager too, if it works.
16) (ONLY FOR I9020A) Reboot phone, turn it off, boot into fastboot, select recovery, CWM should launch, flash the radio file you had downloaded to get radio working on I9020A (ONLY FOR I9020A)
Root only works for the apps that were installed while on 2.3.6
http://downloads.androidsu.com/superuser/Superuser-3.0.7-efghi-signed.zip , use this root file, flash it in cwm, everything works, permissions etc.
This might work for other variants, tested on I9020A and I9020T, I take no responsibility for anything that might go wrong with your device. I take no credit for any links or procedures provided in this guide, I just tested and compiled.
Thanks and best of luck.
..........
Good guide but first two links are broken.
bajansurfer said:
Good guide but first two links are broken.
Click to expand...
Click to collapse
Thanks, fixed.
Do I really need to flash official 2.3.6 before ICS? what if I wipe and format then install 4.0 immediately?
poging22 said:
Do I really need to flash official 2.3.6 before ICS? what if I wipe and format then install 4.0 immediately?
Click to expand...
Click to collapse
Might not work, though you can try, if it fails, do it my way, also its impossible to get any kind of root that way.
Link for the ATT Radio doesnt seem to be working
Great work!
wipe SD card?
Is this necessary?
I don't think it's necessary to wipe the SD card, I followed the procedure in http://forum.xda-developers.com/showthread.php?t=1396913 and although it said my SD card would be wiped, everything was still there after I was done!
Anyone on a i9023 tried this?
Hmm...does "any version" includes M200(Korean Nexus S)?
Sent from my Nexus S using Tapatalk
http://attachments.xda-developers.com/attachment.php?attachmentid=687157&d=1313224429
I think he meant that for the 9020A radio
Link fixed, sorry for that, SD wiping might not be necessary, but I suggest as it makes it cleaner. Might work for I9023 and M200, I have no clue, maybe some experienced developer can answer that better.
Not to crap on a great tutorial, This is exactly what I would be looking for if I were not already set up and running. Last night was a dizzying whirlwind of flashing, high heart rates and finally becoming familiar with fastboot and flashing things like that.....lol
But in the end I simply found a cwm flashable zip without radio or bootloader and installed through cwm like any other rom. As far as root all I did was flash a zip file found on the forums and I was good to go.
Hi mine keeps hanging in the boot animation and can't get into recovery, what else can i do? Is my phone bricked?
little hiccup at step 12. im getting the android bot with exclamation mark but i press volume up with power and nothing happens. menu doesnt show up....
Edit: NVM... i pressed it 3 or 4 times and it finally worked
Michie23 said:
Hi mine keeps hanging in the boot animation and can't get into recovery, what else can i do? Is my phone bricked?
Click to expand...
Click to collapse
You should post it in questions, I cannot answer this.
fromthestars said:
Not to crap on a great tutorial, This is exactly what I would be looking for if I were not already set up and running. Last night was a dizzying whirlwind of flashing, high heart rates and finally becoming familiar with fastboot and flashing things like that.....lol
But in the end I simply found a cwm flashable zip without radio or bootloader and installed through cwm like any other rom. As far as root all I did was flash a zip file found on the forums and I was good to go.
Click to expand...
Click to collapse
Many ways of doing it, I just am suggesting one, the flashable zip for ics isn't available as yet, what did you flash?
i9020 keeps getting status 7 aborted and my padlock is still unlocked on t-mobile 2.3.6
Has any tried this on an i9023? Thank u
Sent from my Nexus S using xda premium
Hi, My UK tablet is stuck on a testing update that was on the FTP and now I cannot update my tablet. My Tablet is stuck on ThinkPadTablet_A310_02_0039_0080_UK_testing but the ThinkPadTablet_A310_02_0039_0086_UK patch only works from 02_0037_0075_UK
My only hope is that I can load on a CWR backup of someones stock tablet from any version. Then I could proceed with standard updates.
Any one who rooted their tablet and had a Nandroid / Clockwork Recovery from a UK tablet and could get that to me would be amazing.
Thanks Steven Richardson
I'm copying my backup now from my sdcard. Will zip it and upload for you in a couple of hours. Its a stock 86 UK backup. Hope that's what you need.
Thats amazing thank you so very much! Cannot wait!
Sorry for the delay. Couldn't find a decent place to upload the file. Haven't used Google drive before but had to upload there as even my dropbox couldn't take it. The file is in a self-extracting archive, just run it and copy the folder "stock.ota2.clean" to your clockworkmod/backup/ folder in your external SD card.
https://docs.google.com/open?id=0B9_U8cZCMA1NS0FHRXRHUTFfWjg
Edit: The file is 401mb.
Edit 2: Finally managed to get it on dropbox. Link: https://www.dropbox.com/s/ohbf1odrvsfzamb/Stock.ota2.Clean.exe
If you don't trust the .exe archive, scan for viruses before running it.
Thanks ever so much. It works great. Have given you Thanks on the forum as well.
I installed your backup. Now i'm not able to update anymore. (Like before )
Does anyone know why?
I just uploaded a clean backup, I dont know if you can update or not. Lenovo always find a way to mess up updates so I haven't tried to update, waiting for positive news from others.
I used it an now am sitting pretty on Ice Cream Sandwich!
Had to install 87 and 89 first
I then rooted it and put in CWR and then updated to ICS and kept root!
Once again thanks
Unfortunately it is not an update to ICS is possible.
Error message every time "failed to verify whole-file signature"
It is probably better to wait for a finished backup of ICS.
I think you must CWM Uninstall before an update is possible.
You can install all of the updates. To get 87 on you have to modify the update-script file inside the update and remove the Indigo assert lines. Then use CWR to install the update.
When i installed 87 it over wrote CWR with the stock android revocery so you could continue on from there with stock recovery.
I used stock recovery to install 89 then I re-rooted and put CWR back on so I could fix the busybox error that comes with the ICS update.
I got mine fully working with root and CWR (although havent check CWR since ICS come to think about it)
Steven
EDIT: just checked ICS update puts stock recovery on.
Just got ICS working with this backup
Sent from my ThinkPad Tablet using XDA
folkommen said:
Just got ICS working with this backup
Click to expand...
Click to collapse
Can you post a short tutorial, how did you proceed?
Did you have Root on ICS?
I lost root during the update. Even the OTA Root keeper wasn't able to restore it.
But then I have to try rooting it myself.
Short instruction to get ICS with this backup:
1. Restore the backup with cwr
2. Modify the updater-script in the 0087_UK update
2.1 open updater-script (/META-INF/com/ google/android/updater-script)
2.2 delete the lines 4 and 5
3. install the 0087_UK update using cwr (install zip from SD)
(This is going to overwrite the cwr)
4. Use the normal ota updates (in the settings)
5. Finished
Thats it.
My TPT has now ICS.
Thanks for help.
I'm happy for you guys that have updated to ICS but some people (me for example) still have reservations about updating to ICS. I'd be grateful if you guys could post some feedback about ICS on this thread:http://forum.xda-developers.com/showthread.php?p=26792555#post26792555
It would also help others as well
Hello,
I have an A500 with 8GB, bought in USA nov 2011.
it is currently running Thor/TegraOwners ICS ROM v164 (with CWM recovery)
my back-facing camera stopped working and I would like to go back to stock to send the tablet in for repairs.
I got the full stock firmware from here: http://forum.xda-developers.com/showthread.php?t=1113878 (Acer_A500_0.000.00_4.010.10_COM_GEN2_1310535068614_9b84abb1)
unfortunately, I'm not having much luck flashing this :| ... I decrypted the zip and extract the update.zip and put it on the sdcard.
-tried applying update.zip through CWM ... no luck (it extracts but nothing happens)
-tried installing stock recovery using 'acer recovery installer' ... no luck (i get the android with exclamation mark when i try to go into recovery)
acer recovery installer shows bootloader version 3.01
any ideas ?
thanks
Fadius said:
Hello,
I have an A500 with 8GB, bought in USA nov 2011.
it is currently running Thor/TegraOwners ICS ROM v164 (with CWM recovery)
my back-facing camera stopped working and I would like to go back to stock to send the tablet in for repairs.
I got the full stock firmware from here: http://forum.xda-developers.com/showthread.php?t=1113878 (Acer_A500_0.000.00_4.010.10_COM_GEN2_1310535068614_9b84abb1)
unfortunately, I'm not having much luck flashing this :| ... I decrypted the zip and extract the update.zip and put it on the sdcard.
-tried applying update.zip through CWM ... no luck (it extracts but nothing happens)
-tried installing stock recovery using 'acer recovery installer' ... no luck (i get the android with exclamation mark when i try to go into recovery)
acer recovery installer shows bootloader version 3.01
any ideas ?
thanks
Click to expand...
Click to collapse
First off, get your UID number just in case you need it. You can get it in the Dev forum (sticky). Always have your UID written down somewhere.
Then go to the "all files" Sticky thread in the Dev forum. Where they have all the Acer roms and updates.
Download 2 or 3 of the a500 ICS Update files. These are full update files.
Decrypt them if needed, then pull the update.zip out. Copy to EXT SD Card, and boot holding Vol+ and PWR till you see the text about installing, then release.
Might have to try more than one, but eventually one should install. These are full update roms, not patches.
Should give you a stock ICS. Hey, check your camera, might start working again
MD