Develop Bugs

HTC Desire first time flash new user

Hi this is my first post so go easy on me please, Im looking into flashing my htc desire im fairly familer with flashing other devices such as xbox or ps
and i want to ensure i get this right obviously. Xda is a great source of information .. ive tryed to read through a lot of it to make sure im familer with proccess
and id just like to make sure ive understand what has been posted correctly.
So as far as rooting is concerned i can follow either of these 2 guides :-
h**p://rootmydroid.co.uk/guides/desire/howto-root-your-htc-desire
h**p://forum.xda-developers.com/showthread.php?t=696189
•Root guide for users who have unbranded(unlocked) Desire - post #2
on this guide i notice you flash with rootupdate.zip , so am i correct in thinking that with any of the roms i download i just rename them to rootupdate for this proccess to work ?
Also ive noticed a lot of talk about backing up and one program keeps popping up called nandroid , as far as im aware i can use this to make a image of my phone and restore at a later date should i want to,
is there a tutorial ive missed in regards to this program someone could point out or any other programs i should use to backup data on phone ... ?
Finally my phone details , i would just like to confirm that im fine for flashing
FW version 2.1update 1
baseband version 32.36.00.28U_4.06.02_2
kernal version 2.6.29-0cb9f166
build number 1.21.405.2
software number 1.21.405.2
H.Boot 0.80.0000
Microp-031d
Radio-4.06.00.02_2
Any help is obviously appreciated thank you , as i say i want to make sure i understand the tuts and info provided

nooooo no no no no, first of all follow this guide to rooting its by far the easyist, http://nimbu.amorvi.com/2010/05/how-to-root-your-htc-desire/, once rooted you will be able to flash any rom from recovery, i suggest flashin the latest clockworkmod recovery from here http://www.unrevoked.com/#desire, when flashing anything there is no need to change there name these days

Just follow the following tutorials to root and flash roms. It's easy as pie.
http://theunlockr.com/2010/06/07/how-to-root-the-htc-desire/
http://theunlockr.com/2010/06/07/how-to-load-a-custom-rom-on-the-htc-desire/
For backup, recovery and whatnot, use ROM Manager app from within Android. It does the same thing as nandroid in recovery mode.

wow thanks for the speedy replys guys really appreciated , im going to go over the information both of you have provided over tea shortly and post back

Since you are 0.80 i suggest not to follow the nimbu's guide. These guides from my understanding is for Hboot 0.75 and lower. The higher ones like myself use a different file. You can follow the steps from theunlockr.com but don't use their file. If u want the 0.80 file i would get it from desire.modaco.com its i think on the first page of the forums.
I just flashed yesterday and i had to open many different tabs cause none of the guides state 0.80 or higher and which files to use.

ok ive gone thru the tuts both have provided and i notice they all tell you to make a gold card , i was under impression i dident need to do this as my phone is network free ?

why not just use unrevoked 3.0?

well this tut i posted is revoked
h**p://rootmydroid.co.uk/guides/desire/howto-root-your-htc-desire
also can i confirm i dont need to make a gold card as im unbranded / network free ?

My phone was unbranded but I still couldn't get past step II on Unrevoke, which was related with goldcard. I suggest you go make one.

tonnytech said:
well this tut i posted is revoked
h**p://rootmydroid.co.uk/guides/desire/howto-root-your-htc-desire
also can i confirm i dont need to make a gold card as im unbranded / network free ?
Click to expand...
Click to collapse
If it's unbranded then you can skip the gold card step.

Please help me.

Hi i have a virginmedia Desire phone, i have tried every meathod to get 2.2 update on my phone, even bought a 1gig card for goldcard which says is working, when i use gold card tool.
My current boot: 080, Version 123, rom installed, everytime i try to flash a differnt ruu to debrand the phone i get error code 140, i have tried 121, 115 roms without avail.
Any help at this point i would be greatful for.
Or i will just have to wait for VM to release it.
Many Thanks in advance
Tapper

Can you stop posting here people?
THIS IS DEVELOPMENT SECTION!!!!!
Post in right sections, mods?
I hope you'll get help tho, nothing against you

one word for you: unrEVOked

www.rootmydroid.co.uk then click "desire" on the right

Hi mate, done that even lost my Normal HTC recovery console.
i read somewere any with 123, bootloader 080 can not update, or downgrade.
can anyone confirm this.

Yes unrEVOked root's your Desire, giving you access to all these nice Rom's on here
Pick one you like to the look of and flash it. You will keep you 0.80 HBOOT and can flash between 2.1, 2.2, Sense and AOSP as you like.

Please help me
You can help yourself by using a proper title for your posts instead of "please help me" and post in the right section, this section is for rom development.

Hi Mate,
Can you give me a little more detail about this, i have tried every solution no to man,
and i either get 121, saying ruu error code 140, or 115, stating error 170,
when i try to root and use the update.zip meathod i get to the assert part then the
install aborts itself.
I would love to someone to tell me if any one out their knows what im doing wrong, or if indeed its a case that my desire has some kind of branded lock on it by VM and HTC,, I am at the end of my tether trying to sort this out. Even bought a new 1gb memory card for rooting still no luck.

I did apologise one before to the admins, im new to this.
I don't think having a go really helps. thanks for your support.

Please could you explain the process, to make sure im doing this correct, sorry for being such a Noob!

Don't be sorry, just explain what your actual problem is

give ys a step by step guide what you are doing with what and where the errors are being thrown up

My problem is: Bootloader 080, Version software 123, Virginmedia unlocked but branded phone, tried all methods to downgrade to 121 so i can flash the 2.2 update.
121 = Error code 140 bootloader when i get to the signatures part, RUU
115 = Error code 171 Bootloader when i get to the singatures part, RUU
Update.zip meathod get the assert part then come up with loads of basic failer errors
then eventually aborts itself.
I made a goldcard = with gold card tool, works fine, but still i cant unbrand my phone, dont know if anyone has come across this, been to Mark Southby blog and no can help me from their. Hopefully you great chaps on here can.

With that bootloader you should not really need to goldcard, just root and flash another rom.
Do not flash the OTA or official 2.2 from HTC as it will just spoil your experiences in the future, if your really that picky about custom roms then just flash a pre-rooted 2.2 stock rom.
Just follow the unrevoked guide on rootmydroid (as per my last post) and you should have no problems (no RUU required).

Many Thanks
for the help i will try that 1st, and come back if i need more assistance.,
sorry for posting in the wrong place.
Tapper Out!

[HOWTO] Root Your HTC Desire in One Click!
Is this the link i need?

tapperace2010 said:
[HOWTO] Root Your HTC Desire in One Click!
Is this the link i need?
Click to expand...
Click to collapse
yep, took me literally 60 seconds.

[Q] Not able to unroot htc desire :-(

I have HTC Desire bought from India with baseband version=32.44.00.32U_5.09.05.30_2 & software number=2.13.720.1.
I rooted my phone with unrewoked3 but now i want to get back to my original rom which i got at the time of purchase as i am not able to get updates. I have tried to flash rom : RUU_Bravo_Froyo_hTC_Asia_WWE_2.13.707.1_Radio_32.44.00.32U_5.09.05.30_2_release_143921_signed but not able to get it done with error 131. Please some one help me out of this i have checked everywhere for this but not able to get it done.. Please help me out of this..

I have successfully flashed the following ROM by using gold card:
RUU_Bravo_Froyo_hTC_Asia_WWE_2.13.707.1_Radio_32.44.00.32U_5.09.05.30_2_release_143921_signed
But i think that this is not the rom which was earlier on my desire at the time of shipping,because i was getting update for:RUU_Bravo_hTC_Asia_India.
Can someone help me getting this clear.. is this ROM different from what i was having at the time of purchase???

You did not need to install that RUU Rom that u installed. Unrevoked ONLY provides root, it does not replace your ROM. You actually lost the original ROM now by installing this new ROM.

Thanx for your valuable reply... But now what i can do??? I want to get back to my original ROM how can i get there??

I'm afraid not much.
Over at shipped roms there is only an old RUU 2.1 (eclair).
It's the right one for you and if you managed to find the updates you'll be okay, you can also try searching for OTAs but I don't know if you have big chance for an OTA when you are right now in such an old version.
Maybe you can mail htc to ask them if they will provide you with a link for the froyo OTA for your software version, tell them you missed it...

clockworkmod
hehe..
I have clockworkmod which is there in the SD card(after rooting the device by unrewokrd one get this), can this help me in getting my ROM back??

You can restore from clockwork but you'll then be still roooted, although with your original 2.2 ROM.
You did the backup rooted - the restore therefore will be with root.

Can i try to downgrade bootloader
Hmmm... Thanks man :-(
I have tried to flash RUU_Bravo_hTC_Asia_India_1.21.720.4_Radio_32.36.00.28U_4.06.00.02_2_release_127705_signed
by using gold card but not able to do that.. I think i have to downgrade radio or boot-loader first then i will be able to do the same... Is it true???
Also please try to give the procedure to downgrade boot-loader...

I don't have experience with downgrading but you can follow the guide by teppic in development - http://forum.xda-developers.com/showthread.php?t=768256
And you do not need a goldcard when you are flashing an Indian x.xx.720.x ROM because your original ROM was this type. You need it only when you are flashing update or a ROM that is not for your device.

OK... I am trying on the same thread but thanx for this..
I will try to downgrade, lets hope for the best

RUU update question

Help, I had a quick look about and couldn't find a similar thread, apologies if the is one tho as there is a lot to look through here and may have missed it.
Story is, I brought my desire z about a month ago not sure what software version it had but I preceded to flash it with a downgraded version ( 1.34.405.5 ) with a .executive RUU utility on my Windows 7 pc. Just to get used to things, I have flashed many phones before no problem.
Now tho I found what I believe to be the latest official ROM from here:
But everytime I run the thing I get error 132 signature update problem or something.
I have tried it while the phone is temp rooted, permanently rooted all the Ian drivers are fine I tried different versions of Windows. I just want to get back to the latest version and be able to update over the air from now on, thanks for reading.

What RUU are you trying to flash ? If it is the new Egypt version, please don't do it, and see the thread in the dev section for reasons why.
My DZ came with 1.34.405.5 and I have successfully flashed the RUU of this version from this forum, no problems.
It would be useful to find out what the current version is on your phone. It will tell you in Menu->Settings->About Phone.
Also it would be useful to check which HBOOT version to have, and whether you are S-OFF. Put the phone into hboot by having it powered off, then hold Volume Down and hold Power till it comes up with a white screen with skateboarding Androids.
It is possible to downgrade a ROM if you go through the procedure in this thread - http://forum.xda-developers.com/showthread.php?t=832503

Helo thanks for reply.
Im pretty sure the version i had on the phone phone was newer than the one i flashed on as i just wanted to have a trial run with a rom that definatly worked fine before trying custom ones ect.
Currently it is S-On HBOOT version is 0:85:0009 and software version is 1.34.405.5 (the one i flashed over the stock)
I cant link to the RUU i am trying to use but it says it is a WWE world/europe one and i also tryed 3 others just incase, all give the same error.
Version is 2.29.405.2 that im trying to get on my phone as i think thats the latest official one??

Your phone sounds like it is stock so far, so it'll probably only let you flash a ROM designed for your very specific model of phone. So if the phone was from a particular country, it will probably only let you flash a ROM from that country, not just any old WWE ROM.
So is 1.34.405.5 on there properly now, up and running ? If so then you could always root it and run gfree to get SuperCID etc, which will then let you flash whichever official ROMs you want (but be careful if it's a very new ROM that might not yet be rootable etc).
I'm not familiar with any ROMs starting with version number 2 though ?

A quick google for 2.29.405.2 brings up Desire & Desire HD links.
BE CAREFUL DUDE!!!!

Yeah phone is running fine, slightly less reliable than it was before i flashed tho but im putting that down to it being a slightly older version than the one that was on here before maby.
Im up for just sticking an official desire z ROM back on here and leaving it alone for now. If you could point me in the direction of a suitable ROM download that would be great, or is there someplace i can go and put my specific phones model in and get the factory shipped ROM back cus that would be even better.
That 2.29.405.2 update is for the standard desire and desire HD? Damn that could have turned out bad had it flashed to my phone.
These smart phones seem a bit more tricky to flash than the older phones im used to doing, is there a decent step by step guide you can link me to for help with flashing as i have come accross 3 different ways already.

If your phone doesn't have S-OFF etc, then you're only going to be able to flash very specific ROMs to your phone. Since we don't really know what original ROM your phone came with, I recommend that you root your phone (using the "rage" method) and get full S-OFF via "gfree". Guides to these two are below, along with a link to a guide to get adb working on your PC :
adb - http://forum.xda-developers.com/showthread.php?t=865685
rage - http://forum.xda-developers.com/showthread.php?t=834228
gfree - http://forum.xda-developers.com/showthread.php?t=855764
Also check out this handy guide, which has a lot of useful info - http://forum.xda-developers.com/showthread.php?t=835777
You will come across a method of rooting called "Visionary". This is in theory an almost one-click method of rooting. However, I personally wouldn't recommend it, because whilst it works faultlessly for some, it goes wrong for others, and when it goes wrong it quite often goes very badly wrong indeed.
If you don't understand some of the stuff in those guides, then please post up in that thread on it, and I'm sure someone will be able to help you out. Best to ask questions first rather than try some stuff out and realise you don't know what you're doing.

[Q] Desire Z first time root questions, please help

Hi, I am have just got my HTC Desire Z/Vision and I am very new to rooting.
I checked on a lot of thread on how to root, s-off the phone before I can install custom ROM.
Some of the tread mention that I need to do firmware downgrade if my device has firmware version higher than 1.34, but I am not sure on my version and therefore I include my information below.
What is the easier way to root my phone?
If I use gfree, do I need to downgrade my firmware? Is there any side effect when I downgrade my firmware?
If I use VISIONary, do I need to downgrade my firmware?
Do I need to do S-Off in order to install custom ROM? or is rooting enough?
Hell a lot of question but I hope you guys can help me out with it.
Android version: 2.2.1
Baseband version: 12.28e.60.140fU_26.04.02.17_M2
Kernel version: 2.6.32.21-g6e170e7
Build number: 1.82.707.1 CL317545
Software number: 1.82.707.1

cruxiality said:
Hi, I am have just got my HTC Desire Z/Vision and I am very new to rooting.
I checked on a lot of thread on how to root, s-off the phone before I can install custom ROM.
Some of the tread mention that I need to do firmware downgrade if my device has firmware version higher than 1.34, but I am not sure on my version and therefore I include my information below.
What is the easier way to root my phone?
If I use gfree, do I need to downgrade my firmware? Is there any side effect when I downgrade my firmware?
If I use VISIONary, do I need to downgrade my firmware?
Do I need to do S-Off in order to install custom ROM? or is rooting enough?
Hell a lot of question but I hope you guys can help me out with it.
Android version: 2.2.1
Baseband version: 12.28e.60.140fU_26.04.02.17_M2
Kernel version: 2.6.32.21-g6e170e7
Build number: 1.82.707.1 CL317545
Software number: 1.82.707.1
Click to expand...
Click to collapse
First, welcome to the boards, it's always nice to welcome people into the world of rooting and flashing (the android kind!).
To start, you will have to get ADB installed and working. To do this, download the Android SDK from here: http://developer.android.com/sdk/index.html . make sure you have the Java SDK and JDK installed as well as the Android SDK requires that as a requirement.
Based on your information, you have the 1.82 system software and will need to downgrade. I am not 100% sure if this guide will be applicable to you since it was written for the 1.72, but look at this guide here: http://forum.xda-developers.com/showthread.php?t=905261
The above guide will help you in downgrading to 1.34, gaining root with gfree/rage, SIM-Unlock and S-OFF, installing ClockWordMod (a.k.a CWM) and flashing a new and shiny ROM for you.
I can completely understand how confusing alot of these guides can be, I spent about 3 hours trying to do the same thing as you a month ago. A year ago, I did the same thing with my old HTC Hero! So if you have any questions, just ask away. XDA is a great community.
Have fun

Thank you for your reply. It does help me to go through the right direction.
Understood that I need to downgrade my build to 1.34, but is there any major difference between my current build and the older build?
After following the guide to downgrade and install CWM, will it also allow me to backup my current official ROM?
As I love HTC Sense too much such a pity that I need to let it go. I am thinking of flashing back to the official ROM when I have the need to.
XDA is indeed to a great community. Great helps from great people

cruxiality said:
Thank you for your reply. It does help me to go through the right direction.
Understood that I need to downgrade my build to 1.34, but is there any major difference between my current build and the older build?
After following the guide to downgrade and install CWM, will it also allow me to backup my current official ROM?
As I love HTC Sense too much such a pity that I need to let it go. I am thinking of flashing back to the official ROM when I have the need to.
XDA is indeed to a great community. Great helps from great people
Click to expand...
Click to collapse
There are alot of fixes and improvements that HTC made between the 1.34 version and the newest 1.84 version. Those would be found with HTC in their changelogs. Also, each of these upgrades breaks the root access that the devs have created. Similar to that of iOS breaking each jailbreak method with each new version of iOS that is released (you will understand this analogy if you have an iPod Touch or something along those lines).
After gaining root, SIM-Unlock and S-OFF, installing CWM would allow you to perform a NANDroid backup (an EXACT image of your current installed ROM) so that you can go back to it at a later time.
If you are like myself (and seems that you are) you love how HTC's Sense overlay works and it just gets you. Keeps things simple while being infinitely customizable. When you do get around to flashing, I would recommend Virtuous as your ROM of choice. It is what I am running right now with no ill effects. The link to Virtuous is in my signature below.
If this is your first time flashing a custom ROM on an Android device, I can promise you that you will NEVER have a reason to go back to the stock ROM unless your phone is damaged physically and needs warranty repair. Even then, it is sometimes cheaper and easier for you to order the parts online and DIY your repairs (did it for my brother's BB Storm when he broke the screen).
Going back to my Hero, I have the stock Android 1.5 image saved somewhere, but I have never had to go back to it. Always found another newer/better custom ROM to flash. With my current DZ, I was fortunate enough to have stumbled onto Virtuous.
Have fun!

Yes, you're right. I like HTC Sense so I don't know if I will get used to the custom ROM without it.
I have checked on the Virtuous ROM previously and I will give it a try.
Yes, I saw plenty of decent ROM, they have nice UI but as you know first time rooting does give me goosebumps.
Will try it and I hope everything goes smooth.
Thanks a lot for your kind explanation, it does save me time in putting up all the pieces together

I bumped into a problem as I try to downgrade my firmware.
I followed the guide on this thread http://forum.xda-developers.com/showthread.php?t=905261 and I encountered error on step 11, when the phone goes into bootloader mode and tries to scan PC10IMG.zip file that I copied into the SDCard.
It said 'CID' incorrect!, Update Fail!
Anybody knows why I might have this issue? Is this because of the firmware difference as mentioned by Athrun88?

cruxiality said:
I bumped into a problem as I try to downgrade my firmware.
I followed the guide on this thread http://forum.xda-developers.com/showthread.php?t=905261 and I encountered error on step 11, when the phone goes into bootloader mode and tries to scan PC10IMG.zip file that I copied into the SDCard.
It said 'CID' incorrect!, Update Fail!
Anybody knows why I might have this issue? Is this because of the firmware difference as mentioned by Athrun88?
Click to expand...
Click to collapse
As stated in the thread you are using to downgrade, your CID must be one of the following:
g4rb4g3 said:
If your INFOCID is NOT one of these you need to make a goldcard to downgrade!
HTC__001
HTC__032
HTC__E11
HTC__203
HTC__Y13
HTC__102
HTC__405
HTC__304
HTC__A07
HTC__N34
HTC__J15
Click to expand...
Click to collapse
IF its not in the above list you must make a gold card first then use the thread that you listed to downgrade. To check your CID run the following commands:
check with:
Code:
adb reboot bootloader
fastboot oem boot
Click to expand...
Click to collapse
There is a link in the thread you listed on how to make a gold card. The method you are trying is comfirmed to also work with 1.82. So the reason you are having problems is NOT because your on 1.82 firmware, more than likely your CID is not listed above. Solution = GOLDCARD.

Thank you for the reply.
I have looked into the Goldcard method (http://forum.xda-developers.com/showthread.php?t=832503) and actually spent my time trying to accomplish the result.
Part 1 and part 2 are pretty straightforward but now I bumped into another problem when I tried to do part 3 as it requires me to have root access to execute the command.
I have tried to get the root access by following methods from different threads such as using rage (http://forum.xda-developers.com/showthread.php?t=834228).
For this method, I tried to do temp root and I am stucked on step 5. After launching 'Terminal Emulator' and running 'rage'. I can't seem to run the 'Terminal Emulator' again. When I launched it, it Force Closes. Tried to launch it again, my phone just displayed black screen and keys doesn't seem to be responding not till I off and on the phone (not reboot).
I also tried to use Visionary too but doesn't seem to have any luck.
Is there any other method I can try to get the root access?
Another question is after I followed Part 1 of the steps in http://forum.xda-developers.com/showthread.php?t=832503, when I boot up my computer, I can't seem to go to Windows. I am sure I selected physical disk instead of logical disk but I don't know why this happen. Anybody encounter the same problem?

I'm currently in the situation of wanting to root and S-off my Desire Z in order to update, either to official or (more likely) Virtuous ROM.
However before I do so I have a couple of questions.
1) How do I back up everything on my phone? I know my contacts and calendar will be fine as they are from my google account, also my email will be ok as that is also my google account. Photos etc I can just copy to my PC but what about all the apps I've installed, and my progress in them, my pair bluetooth devices, my wifi access points, my mesage apn settings etc etc?
I have tried Titanium Backup but not having paid for the full version, the info it gives you is a little limited so i'm not sure what it's backed up etc?
2) I currently have root via using Visionary, do I need to unroot and then go through the process with all the adb stuff? Also, will i need to uninstall the SuperUser I have installed?
3) I think my ADB is setup as I managed to get it to boot the phone into the bootloader, but when Itried to check my INFOCID using
Code:
fastboot oem boot
I got an error message saying that fastboot was not a recognised function (or something similar to that) Is this a problem?
ANy help really really appreciated as I am a total newb with Android but would love to move to a more up-to-date software version as I am currently on 1.34.
Thanks in advance.

valve90210 said:
I'm currently in the situation of wanting to root and S-off my Desire Z in order to update, either to official or (more likely) Virtuous ROM.
However before I do so I have a couple of questions.
.......................... lots of questions...............
ANy help really really appreciated as I am a total newb with Android but would love to move to a more up-to-date software version as I am currently on 1.34.
Thanks in advance.
Click to expand...
Click to collapse
You could wait until HTC releases a OTA update for your phone. Or as a alternative and avoiding being impatient, you could do a lot of reading and learning on this site to apply a custom rom. It is not that difficult at all, but do not expect a step by step walking trough the minute you ask for something here.

HLeenders said:
You could wait until HTC releases a OTA update for your phone. Or as a alternative and avoiding being impatient, you could do a lot of reading and learning on this site to apply a custom rom. It is not that difficult at all, but do not expect a step by step walking trough the minute you ask for something here.
Click to expand...
Click to collapse
Wow, thanks for your helpful post...
I've done loads of reading on the forum and have gone rather round in circles. I think I know what I'm doing but seeing as someone else who is new to it had posted a thread I thought I'd also ask a couple of questions that I had which were pertinent to the discussion, to firstly find out for myself and secondly to help anyone else that might be finding the thread otherwise useful.
I think I have sorted the abd problem I was having, it seems that various tools have moved to different folders in the latest version of the android sdk so when I was trying the "fastboot" line it was nt findint fastboot.exe as it was in a different folder.
Secondly I'm fairly happy to give the gfre stuff a whirl but before I do I just wanted a little confirmation about backing everything up...not a huge ask really and fairly essential I would say!

valve90210 said:
Wow, thanks for your helpful post...
I've done loads of reading on the forum and have gone rather round in circles. I think I know what I'm doing but seeing as someone else who is new to it had posted a thread I thought I'd also ask a couple of questions that I had which were pertinent to the discussion, to firstly find out for myself and secondly to help anyone else that might be finding the thread otherwise useful.
I think I have sorted the abd problem I was having, it seems that various tools have moved to different folders in the latest version of the android sdk so when I was trying the "fastboot" line it was nt findint fastboot.exe as it was in a different folder.
Secondly I'm fairly happy to give the gfre stuff a whirl but before I do I just wanted a little confirmation about backing everything up...not a huge ask really and fairly essential I would say!
Click to expand...
Click to collapse
You can use Astro File Explorer to back up your apps, Call Logs Backup and SMS backup will backup the sms threads and call logs or if you want to spend a couple of bucks Root explorer works well for me also. Once you have CWM you can make a Nandroid backup and will have an exact image of you phone at that point in time that you can go back to. I am waiting for my DZ to arrive and currently using an Inspire and 2 Captivates that other than minor differences in the procedures the backup maintenance is the same. The problem is that if you downgrade to a rom that allows CWM you cant back up the existing newer one. There are copies of it out there though. Just be careful if trying to go back to it and read carefully as I understand there are possible problems going back if the correct procedures are not followed. Good luck to you and as the previous poster stated about educating yourself, I fully agree. Read until you understand then read again to make sure you are not missing something. Follow directions EXACTLY and it usually avoids problems.
Sorry I see you are on 1.34 which I think means that once you get S-Off and root you can download rom manager from the market, install clockworkmod and you will be good to go with Nandroid backups.