Database Users

Bootloader 5.22 to 5.15

I have a 5.22 Bootloader and wondering how to back it up before downgrading to 5.15 from Jeff's tools.
Thanks. !
I tried with the XDATools but does not give option for Bootloader only ROM!

we made xdatools as safe as possible, no option to screw around with bootloaders.
I did create some other tools that you can use to backup your bootloader.
if you download these tools http://www.xs4all.nl/~itsme/projects/xda/tools.html
and run
Code:
pmemdump 0x80000000 0x40000 bootloader.nb0
that will save your bootloader in bootloader.nb0.
or you can use this pocketpc tool: http://www.xs4all.nl/~itsme/download/savebootloader.exe
it runs on your xda, and save your bootloader to a file in the root of your xda

Great thanks this works fine.... but when I run
pnewbootloader bootloader_v5_15.nb0 I get
Unable to find flash info offset, cannot disable bootloader writeprotect
I wish to upgrade to rom 4.0.x but would like to have a 5.15 wallaby before doing so. In case I need to downgrade back to 3.17.
Any help appreciated. Thanks. !
If their is no solution to this... Can I upgrade to 4.0.x and still be able to downgrade again later using another method!.

Hello,
this is the same error message I got when I tried to downgrade bootloader from 5.22 to 5.15. I was not sure if I am doing something wrong or what. I hope there is a fix to this.
Is the problem the Rom version or is it the 5.22 issue?

Use the old xdarit which gives an option to create a boot flash card. I have used this but as the developers warn this will "brick" your XDA if it goes wrong. My guess would be that you can downgrade to 3.17 on a 5.22 bootloader anyway. My advise would be to try that first because if it works theres no point in risking your bootloader and if it doesn't work you only have to reflash a 4.x image or try the old xdarit.
Richard

Thx for the reply, but the issue is how to downgrade to 3.17?
Program A is not working with this bootloader version (5.22) and I am not sure if XDArit will work with it.
Has anyone used XDArit with bootloader 5.22?

Perhaps I didn't make myself clear. I have bootloader 5.22 and have loaded 4.x images via flash using xdarit. I have also re-loaded bootloader 5.15 using the old xdarit to write a bootloader file.
Richard

Many thx Richard,
I do have an SD card reader (6 in 1) and I am not sure if this is the reason for the many errors I am getting when I try to use it. Recently posted posts say it could be.
I have also an image for the 5.15 bootloader.
Do I need the SD card reader to do the bootloader downgrade?

I have a six in one card reader and have the same problem you and many others have. In my case my SD card reader is disk six but I have to select disc 5 to get xdarit to see it. The bit to watch out for is to make sure that in selecting another disk it doesn't pick up your hard drive. The best way to be sure is to use the rom image tool to write a an image to your disk. Then using the old xdarit from the strat screen use the drop down list for the drives and you will see a load of data apear when you hit a valid drive you can recognise you have the right disk because you will see "Wallaby HTC" or simmilar. Then select write to disk and select 3.5k header and your 5.15 bootloader and write the file. when you put this disk in your XDA and enter bootloader mode it will offer to write it for you.
As I have said before I think you should try to write a 3.17 image to the disk first and try that. At the end of the day a corrupted rom is easy to recover from a corrupted bootloader = brick.
Also I have no problem with Program A and bootloader 5.22
Richard

No luck till now
Not sure what happened so far but I am unable to use my card reader now. Even when I connect it to a different laptop and insert an SD card from my camera, it says the card needs to be formated and even when I say ok format it, it says can't format.
When you right to the SD card using XDArit, my understanding that it will generate a file taht has the header required for bootloaders greater than 5.15. I am now ONLy trying to downgrade the bootloader. SO, the created file should be small. If you make this file available, would it be then easy to copy and pase it to a different SD card without using any tools?
Thanking yoy for your pateince

When you put your card in the SD card reader it is Windows that is offering to format it. xdarit does not need the card to be formated. If you put the card in and open xdarit can you see a string of data in the box ? If not use the drop down menu and try a different drive.
You can't (to the best of my knowledge) create a file that can be copied direct to the card because of the header required. i.e i can't email you one.
If you are having no joy reading from the card i.e you can't see the data as above try a different card perhaps the one you are using is duff.
Richard

It seems my card reader now has a problem.
I got an SD backup from an XDA that has bootloader 5.15 and the Rom CE
Now my Boatloader is 5.22 but this is what I am trying to get rid from. So, when I insert it in my device, it asks me if I want to press the action item to boot from SD. I am afraid that this will screw up my machine!
Is there a need that this file be written to the PC first then moved again to the SD card after checking the higher than 3.15 boatloader box?
Regards

If the backup you took was just the CE image then go ahead and restore the image. If you took a CE+bootloader image then you may want to transfer to your desktop and reload just the CE image but if your card reader is down I guess you can't do that. So if you have access to another XDA just redo a backup making sure you just have the CE image.
Why are you so determined to loose the 5.22 bootloader ? if it works on a 3.x image just leave it there its not doing any harm. If you are really nervous I will try a 3.x image on my XDA with 5.22 and let you know before you try on yours.
Let me know soon I live in Australia and its Friday night and the pub is calling.
Richard

You bet that I am nervous.
I would greatly appreciate your help in trying this first.
You can also e-mail me at [email protected]
Regards

I did try it and the Rom is downgraded now.
I still need to downgrade the bootloader so I can use XDAtools easily.
Will the same method work if I backup both the Win CE and Boot?

You don't need to HONHESTLY all the tools work fine on 5.22 BELEIVE me
If you must then yes is the simple answer but there is always a risk that it will go wrong and screw your XDA
Richard
Off to the pub now

OK got it all figured out!
I had:
A Rogers ATT (Canadian phone) running the Rogers ATT ROM.
Rom: R.20.x (don't remember) probably a 3.x
Radio Version: A.20.10
Bootloader: 5.22
Here are my steps. I will skip everything that went wrong on my journey and go straight to the point.
First I tried to use the new XDATools to upgrade the rom via Program A but with no sucess so used on method. !
NOTE: Their is not need in Canada to upgrade radio version cause the phone is already shipped with the latest. !
1- Used the old version of XDArit 1.0 to burn Wallaby Bootloader 5.15 from JEff's tools on my SD card (32Mb) with a Dazzle SD card reader
2- Inserted the card in my XDA and started the actual bootloader 5.22 and pressed action to download boot image.
3- Used XDATools (New version/product) to burn the SN40016wwe_vs.bin (see 4.0.16 rom is here post). (XDARit failed to get that one on the SD).
3- Inserted the card in my XDA and started the actual bootloader NOW 5.15 and pressed action to download CE image.
4- Did a soft reset and got T Mobile prompt... !
5- That's it phone works A1. !

Thanks for the info Yanick
So now u have 5.15?
What is SN40016wwe_vs.bin and where to get it from?
Is it specific to the ROm version you are upgrading to?

Hello,
I have to say I am kinda of lost now (not unusal :lol: )
I was thinking that the problem is in the boatloader but when I followed your method, my XDA seems to run 5.15 now.
Why an I still unable to use the XDAtools to write a new Rom file?
When I try to, I go as far as seeing upgrading in the laptop and on the XDA screem but then the connection (I use USB) is lost between the laptop and the XDA
When I try to upgrade the RSU (an excutable file), it goes as far as downloading the file to my XDA and restarting it to get a button saying start on my xda screen. When I press it I get the error message saying "als Failed " after 1% downloading?
If it is not the bootloader that was the problem, what is it?
Or am I having a non 100% functional bootloader now (5.15) or what?
:shock:

OK so you are running Bootloader 5.15...
Now download 4.0.16 ROM CE from
refer to this topic for download
http://xda-developers.com/forum/viewtopic.php?t=2354
Then Use XDATools to burn image on a 64MB or greater SD card. Then Reset your PDA using (RESET + POWER) combination with the SD card already in the machine and it should prompt you to download CE .. Press Action and here you go !

XDA Rom Flash crash, need help to solve, have 1 working XDA!

Hello,
can someone please help me?
Needed to unlock my XDA goes nobody could do it here ;-(
Crashed in the upgrading screen:
it wil take about 5 minutes ....
Has Wallaby Bootloader V5.15
I have already a ROM file NK.nb1 file from the ROMkitchen,
but i don't know how to get it working on my messed up XDA.
Have read a lot in this forum but really don't know much about programming ;-(
is it possible to make a copy from my working XDA (with XDAtools) and then replace the NK.nb1 file or something? and how can i get it into it?
read a lot about Bootloader but sorry don't know how to handle ;-(
If someone could help me -> THANKZ
Greetingz from Holland,
Marco

ok...
if you dont have an SD-CARD reader, get one!
then, from ROM UPDATE FORUM, find and download XDA TOOLS.
RUN xda tools.
it will ask you for source, (most likely C:\program files\RUU\ENGLISH)
and will ask for destination, since xda dont work, use SD READER
Start Copying to card
when done, insert card into xda
reboot via bootloader ( thats when you powerup with on/off button pressed and soft reset)
IT should detect that there is a system on the card, and ask if u want to install it.
press the ACTION button for yes. (thats the big silver button between the fone buttons)
thats realy IT
if you need more help... email me, or better yet add me to MSN messenger, if u have one. i'll walk you thru it.
thanks to a great warranty, i've practiced and tested alot of xda's
but now that i mastered it ( i think) i stuck to one

Thankzzzzzzz
It worked
Was a little late so i didn´t do it wright myself
Copied the file to SD
instead of doing it with XDA tools to SD
Works now fine.
Had some trouble with GSM and T/mobile card, but copied with XDA tools from working XDA to SD and now it works.
Keep this file on an SD card so now i can try to load ROM´s or upgrade to 2003 cause i can always put it back, so no risk!
Thankz Again,
Greetz Marco

I created one nb1 file using Jeff's kitchen, use XDATools write it to a SD Card, slot it into my XDA, press on/off button + soft reset key, bootloader screen (wallaby bootloader v5.17) appear, and say 'GSM OK', if press Action Key now will bring me to "Diagnostics" menu, if press Calendar key bring me to "Utilities" menu, if press Contact key bring me to "Flash Tools" menu, and if press Record Key bring will me to "USB Flash Mode", it didn't auto detect the SD card to allow me to flash my device, may I know where have I done wrong, anybody help? Thanks!

Sounds like the ROM imaged didn't make it to the SD card.
Do this test and report back on your results.
With the SD card still in the slot do a soft reset, if the image is on the card
your XDA should ask if you want to format the card.
HTH

It did ask me whether want to format the SD card.

Ok give it another shot but this time try using XDArit 1.0 to right to SD.
For more info. on XDArit visit: http://www.xda-developers.com/XDArit/
XDArit version 1.0 can be download from the software section at:
http://www.yorch.net
Just in case here is my how to use XDArit to write nk.nb1 or nk.nbf to your SD card (aka the Bootloader Method!)
1. Place XDArit and the nk.nb1 or nk.nbf file in the same folder and start XDArit.
2. Select your SD card (disk drive) from the drop down menu.
3. Select Write to SD
Notice that the Windows CE box is already checked so just click the browse button at the end of that window.
4. Select your (nk.nb1 or nk.nbf) image and then Open
Notice by default XDArit will open looking for a *.nb1 file but if you’re going to use a .nbf file you’ll have to manually change the “Files of Type” to *.nbf
Notice that nk.nbo / nk.nbo was automatically added as your boot-loader and its check box is unchecked so leave it that way and click OK. XDArit should start writing to the card.
When XDArit has finished writing the image put the SD-card into the XDA and hold the power button and soft reset. You’ll be taken to the below screen:
SD DOWNLOAD
Card Type:
CE OS & BOOT
Press action to Download
Or
Press REC to Exit
Press action to download and it will start the download/restore from the SD card.
Follow the on screen instructions once its "Completed" which will consist of a "Soft Boot/Reset".
HTH
&
Good Luck

Hi Qman, I followed exactly your instruction, but still the same wallaby bootloader screen, I can't see any sd download screen???

Sorry to hear that, I'm not to hip on wallaby bootloader v5.17 but
it works just with wallaby bootloader v5.15 works!
HTH

Thanks you for your prompt reply, btw is there anyway to downgrade the bootloader to 5.15?

ycneosg said:
Thanks you for your prompt reply, btw is there anyway to downgrade the bootloader to 5.15?
Click to expand...
Click to collapse
many ways to download bootloader to 5.15!
read the old threads you will see how!

Hi Guys,
I need your help .
I've downloaded the 4.00.16 ROM by mistake, it really didn't tell the ROM number, so now I want to revert to a earlier one and I can't.
I've got the following message: "ERROR: GetDeviceData - An established connection was aborted by the software in your host machine.
error getting devicedata" and then "ERROR 011: EXECUTE REMOTE COMMUNICATION PROGRAM ERROR. Cannot execute the remote communication program. Please make sure that the USB/Serial cable is properly connected."
PLEASE HELP ME, I'M REALLY STUCK NOW AND DON'T KNOW WHAT TO DO...

use SD to restore your system if you have backup!
if you still have problem to get your phone life back, send to me I will fix it for you!

I forgot to tell you, I haven't got SD :evil:
I've been using .EXE

ritmo-unido said:
I forgot to tell you, I haven't got SD :evil:
I've been using .EXE
Click to expand...
Click to collapse
Wow!
I could help you to fix it, if you send it to me!

similar situation but somewhat different.
I cooked a rom in kalex kitchen and wrote it to my sd card with my t-mobile pocket pc phone connected to activesync. I then flashed the phone from the sd card but got a checksum error at the end. I did a hard reset but only got a blank screen. Right now I can access the bootloader but that's it. I don't have a good backup rom because (not thinking) I wrote over it with the rom from kalex kitchen figuring it would become my backup (it must have somehow been corrupt). I tried writing the rom I previously had on my phone to an sd card directly through a card reader on windows 98, windows XP and windows ME all with no success. Thus, I'm dead in the water. I have no clue why I can't flash to the card reader. I went through a ton of posts here but have not found the answer yet to get me back working. Does anyone have any ideas on this? I have no clue why xdatools and xdarit are not working (especially on XP - I know they should not work directly to an sd card on windows 98 but I tried anyhow out of desperation). Please help.

got it working
used xdarit on another pc running windows xp and successfully wrote the rom to the sd card using my card reader. i then flashed my phone using the bootloader method and i'm up and working again!

can't get the xda to load from sd to upgrade to WM2003

hello,
i'm using the xdatools to put the nk file on the SD card, but when i hard reset my xda, i get into bootloader 5.22 mode, it says "gsm ok", and when i press the action button i get into a test menu.
How can i load the nk file from my sd card? please help.
thanks guys.

Did you place the ROM on the SD card by browsing to your device (...) or using the drop down and choosing your SD reader or XDA SD slot?
I had the same problem until I used the drop down... if you browse to your card, XDA tools will not create a bootable SD.

i used directy dropping down the box to SD

When you use the drop down menu on the destination there should be a drive letter next to your card eg: F: 59.60M USB sd reader or similar, choose that and it should work.

do we soft reset or hard reset
well after loading nk.nbf file
do we soft reset or hard reset to get into bootloader.
also,
the drive letter in destination folder will come if u use card reader,
but if in expansion slot than it does not give the drive letter.

Hello
I did hard reset .

I am having this same problem...
I download to the SD card through the cradle, using the phone's expansion slot. I do a SOFT RESET, to get the bootloader, and all I get is a GSM OK message. If I hit the action button, I then get into the test menu.

Hello
Means you have no nb.1 on your SD card .

as per the instructions I've been following that have been listed in detail here on this site as well as the att siemens support forums, you are supposed to copy the nk.nbf file and use that with the OS Image tool...is this incorrect?

OSImage
I just installed new ROM from new ROM Kitchen .
http://lumpistefan.dyndns.org/
1) Get the file on your desktop ( download or ...I do not care)
2) Open OSInage
3) Source :arrow: Brows to your file
4) Destination :arrow: your SD card (where is it :?: -on your phone
or on the SD card reader)
5) Copy the file to SD card (takes 20 seconds)
6) Remove the XDA from the cradle and soft reset with power button held in.
7) When it says press action to download, push the big button between dial and hangup.
8) Hard reset.
9) Injoy the rest of your day

No way getting SD-Card recognized
Hello,
i have the same problem, the ROM (Made with xda-tools or XDArit) on sd-card is not recognized to download when i boot into bootloader!
I found no way to get this running.
Any ideas?

read this thread: http://forum.xda-developers.com/viewtopic.php?t=3274
most likely, your wallaby bootloader is not 5.15. Anything above 5.15 won't work. I could downgrade from 5.17 and 5.22, but not from 6.22
still awaiting for some help to down grade 6.22. Nobody seems to care. THis forum has become "too" big that it is not as effective as before ...
People tend to just "shout" and ask before digging deep enough...
too many people posting the same questions into different threads again and again

andhy said:
read this thread: http://forum.xda-developers.com/viewtopic.php?t=3274
most likely, your wallaby bootloader is not 5.15. Anything above 5.15 won't work. I could downgrade from 5.17 and 5.22, but not from 6.22
still awaiting for some help to down grade 6.22. Nobody seems to care. THis forum has become "too" big that it is not as effective as before ...
People tend to just "shout" and ask before digging deep enough...
too many people posting the same questions into different threads again and again
Click to expand...
Click to collapse
I'm in the same situation - I have v6.22 on T-Mobile 4.01.00ENG and can't do anything, even with an SD card!
Even the BootLoader downgrade tool with XDATools doesn't work.
Any help with this would be appreciated by many other users in the same situation.

The downgrade batch file in XDA-Tools doesn't work for a lot of people (didn't work for me either). However the wallaby patch should work. Otherwise, use XDARit to downgrade the bootloader using the .nb0 file that comes with the downgrade batch in XDA-Tools.
You write the wallaby patch onto the SD card using XDARit, go into the bootloader and enter diagnostics. Then take the SD card out, write bootloader 5.15 onto the card using the bootloader option in XDARit, and place the SD card back into the device. Then from the patched diagnostics screen select Restore SD and it will recognize a bootloader update. I'd recommend saving your original bootloader from the diagnostics first, but that wouldn't work for me for some reason.

i had a 5.17 boot loader that i downgraded to 5.15 via OS image tools, i also downloaded a rom file from the Kitchen & wrote it on SD but i still can't load from SD & i only get the test phase thing

i also downloaded a rom file from the Kitchen & wrote it on SD but i still can't load from SD & i only get the test phase thing
Click to expand...
Click to collapse
Try using XDRit instead of XDA-Tools (use the older version of XDRit instead of the newer version). I'm not sure what you mean by "test phase", but maybe your bootloader screwed over during the update? If so you may need to rectify that first, but that's definately beyond me. If you burn the image correctly onto the card it should pick up automatically as soon as you enter the bootloader with 5.15. If you don't burn it correctly then it won't be picked up.
I'm just throwing in my 2c because I've made all this stuff work with a 5.15 downgrade. There's a possibility the thing simply doesn't like your card too, so try a different 64MB SD.

well i do have a 256 mb card & as far as i can tell the downgrade worked fine, now to use the xdarit files to i need to have the SD reader or i can do it the same way i do in XDAtools which is directly into the card through Active Sync

not upgrading properly

hi,
well as i loaded the nk.nbf file and transfered to sd using xdatools ,,,
well initially it does not enter the bootloader than somebody suggested to
fix the bootloader using xdatools, well after that it starts to enter wallaby bootloader 5.17.
well now my sd with nk.nbf file is in the slot,
i enter bootloader,,,
after series of test like pda checksum, recording etc , it shows four colours, then tap test,, then button test,,
till here it happens with no delay,,
but when it enters sd card test,,, and says start test......
i does not move forward,, even i took my sd out and put it in again,, no response..
well i dnt know that will ill be able to upgrade it or not.
sos.

Tests? We don't need no stinkin' tests!
Why are you running the tests? In my experience the option to install the ROM in the bootloader comes up as soon as the XDA boots (no test options are shown when the SD card contains a ROM image). If you hadn't said that you had used XDATools to put the ROM onto the SD card I would have guessed that you had just Windows-copied the ROM image over. When you insert the SD card with the ROM image (before going into the bootloader) does the XDA ask for permission to format the SD card? It should, because the card containing a ROM image doesn't have a proper FAT format.

How are you choosing destination in xdatools, you must use the drop down menu not the browse button, in the drop down it will show something like E:sd card 62 mb free or similar when using card reader/writer.

cruisin-thru said:
How are you choosing destination in xdatools, you must use the drop down menu not the browse button, in the drop down it will show something like E:sd card 62 mb free or similar when using card reader/writer.
Click to expand...
Click to collapse
I have exactly the same problem and I do as you said i select the destenation from the drop down list and still when I enter the bootloader it doesnt prompt me any thing, could you guess what could be the problem?

Yes i tried all things
well,
i used xdatools to transfer nk.nbf file to sd card,(firstly i tried in slot in xda, secondly from card reader)
well same thing ,, it enter bootloader and says gsm ok, and proceeds with the test.
also the current rom ask me to format the card ,yes.
i dont know why its happening,
but i have tried both the nk.nbf files (from siemens and from yorche.net)
i really cannot think where the problem can lie.
got,
bootloader 5.17,
rom-3.17.03

drop down
and also,
while transferring the file from source ----i choose the source dir for nk file
and to destination i always drop down...

How to fix failure during upgrading ROM

I have a siemens sx56 with AT&T. I was trying to upgrade the ROM version to unlock it. Using XDA developer software and during this process, somehow the connection between the computer and the phone stopped (active Sync). Now the phone is not responding and the screen still displaying the upgrading process. I tried to reconnect but the Active sync does not recognize the devise. I read in this forum that you can solve this problem by using SD card with a good ROM version. Here is what I did. I copied the NK.nbf to the SD card using my computer SD read/write slot. I inserted the SD card in the phone and did the boot loader mode. What I got is "Wallaby boot loader v5.22 GSM OK" that set. Does the phone will automatically ask to press action to start flashing or I have to press a certain key. I tryed all the keys but they give me different tests that they work fine. So far I am not able to find the key that will install the the cooked rom. After that, when I tried to use the SD card in the computer, it did not recognize the card and ask me to format the SD card. I tried the fat and the fat 32 format and download NK.nb1 and/or NK.nbf and again I got the samething. Do I need to down load the ROM file using the XDAtool or just copying the file from the computer to sd directory will do it. I would really appreciate it if someone points out the best way of handling this problem (i.e. get the phone to work with the appropriate ROM and unlocking it) thanks.

Seif said:
I have a siemens sx56 with AT&T. I was trying to upgrade the ROM version to unlock it. Using XDA developer software and during this process, somehow the connection between the computer and the phone stopped (active Sync). Now the phone is not responding and the screen still displaying the upgrading process. I tried to reconnect but the Active sync does not recognize the devise. I read in this forum that you can solve this problem by using SD card with a good ROM version. Here is what I did. I copied the NK.nbf to the SD card using my computer SD read/write slot. I inserted the SD card in the phone and did the boot loader mode. What I got is "Wallaby boot loader v5.22 GSM OK" that set. Does the phone will automatically ask to press action to start flashing or I have to press a certain key. I tryed all the keys but they give me different tests that they work fine. So far I am not able to find the key that will install the the cooked rom. After that, when I tried to use the SD card in the computer, it did not recognize the card and ask me to format the SD card. I tried the fat and the fat 32 format and download NK.nb1 and/or NK.nbf and again I got the samething. Do I need to down load the ROM file using the XDAtool or just copying the file from the computer to sd directory will do it. I would really appreciate it if someone points out the best way of handling this problem (i.e. get the phone to work with the appropriate ROM and unlocking it) thanks.
Click to expand...
Click to collapse
Bro, you shouldn't change the Sd fat you erased what's written on it anyway your unit is still on the safe side and you can bring it to normal.
First of all downgrade your bootloader to 5.15 >>>
goto this http://forum.xda-developers.com/viewtopic.php?t=3274

Hi,
I also have exactly the same problem with my Siemens SX56 as those of Seif's. My Wallaby's boot loader version is 5.22. Ramram said that the first thing to do is to downgrage bootloader. But I couldn't understand how to downgrade the bootloader because I do not have a copy of old bootloader. Should I use 'OSImageTools' or 'XDArit' to write backed up CE image to SD card?
Seif, how did you solve your problem?
Best Regards

rafia said:
Hi,
I also have exactly the same problem with my Siemens SX56 as those of Seif's. My Wallaby's boot loader version is 5.22. Ramram said that the first thing to do is to downgrage bootloader. But I couldn't understand how to downgrade the bootloader because I do not have a copy of old bootloader. Should I use 'OSImageTools' or 'XDArit' to write backed up CE image to SD card?
Seif, how did you solve your problem?
Best Regards
Click to expand...
Click to collapse
You need XDArit to write the rom to your SD read the past post on how to copy rom to your SD which is the safest way of installing the rom into the device, by using XDAtools press on FIX BROKEN BOOTLOADER this will downgrade you bootloader to 5.15 don't forget to connect your unit to the cradle when you want to downgrade.
I recommend 1rst of all to make a quick search in threads to be totaly ready for this
this would help :
http://forum.xda-developers.com/viewtopic.php?t=6581&highlight=downgrade+bootloader
http://forum.xda-developers.com/viewtopic.php?t=2068&highlight=downgrade+bootloader
Good Luck now.

Update : How to fix failure during upgrading ROM
The problem was solved. Here is what I did. I copied the NK.nbf file to the SD card using the XDAtools. It seems that the XDAtools uses special format for the bootloader that well recognize the ROM file on the SD card. Rafia your bootloader (v5.22) is fine you do not need to downgrade it.
You should follow this procedure:
1. Install ActiveSync that comes with the device.
2. download XDAtools from this site and install it in your computer.
3. Cook the ROM ( or get it by extracting the zip file from the XDA developers special edition ROM.)
4. Use the XDAtools to copy the cooked NK.nbf file from your computer to the directory of the SD card
5. Insert the SD card in the dead device and go to the bootloader mode (soft reset while pressing power key). Make sure it has more than 80% battery before starting.
6. If it is still working and the bootloader ver. is older than 6.22, it will ask you to press action to start flasing.
7. Once finished, remove the SD card and hard reset, wait 60 sec and hard reset again.
Good Luck and special thanks to Biso for his help.

Re: Update : How to fix failure during upgrading ROM
Seif said:
The problem was solved. Here is what I did. I copied the NK.nbf file to the SD card using the XDAtools. It seems that the XDAtools uses special format for the bootloader that well recognize the ROM file on the SD card. Rafia your bootloader (v5.22) is fine you do not need to downgrade it.
You should follow this procedure:
1. Install ActiveSync that comes with the device.
2. download XDAtools from this site and install it in your computer.
3. Cook the ROM ( or get it by extracting the zip file from the XDA developers special edition ROM.)
4. Use the XDAtools to copy the cooked NK.nbf file from your computer to the directory of the SD card
5. Insert the SD card in the dead device and go to the bootloader mode (soft reset while pressing power key). Make sure it has more than 80% battery before starting.
6. If it is still working and the bootloader ver. is older than 6.22, it will ask you to press action to start flasing.
7. Once finished, remove the SD card and hard reset, wait 60 sec and hard reset again.
Click to expand...
Click to collapse
Thanks a MILLION for this info. I'm in the same boat, with bootloader 5.22. One question though, when I'm in bootloader mode, which option do I choose from the menu to transfer the ROM to my device from the SD card? Will there be something automatically coming up? Or will I use one of the options listed below:
1. CE ROM TO SD
2. BOOT TO SD
3. CE + BOOT TO SD
4. GSM ROM TO SD
5. CE + GSM TO SD
By the way, so I never do anything to ruin my device again, can someone please explain what each option does?? I really don't have a clue.

as you can read from the menu you type in all these options are to the SD card
and they are to backup i suppose
rom upgrading should start automatic when a sd card with valid rom is in the sdport
and you are in the bootloader
maybe it ask you i forget but it's not something you have to find browsing
the menu's

Rudegar said:
as you can read from the menu you type in all these options are to the SD card
and they are to backup i suppose
rom upgrading should start automatic when a sd card with valid rom is in the sdport
and you are in the bootloader
maybe it ask you i forget but it's not something you have to find browsing
the menu's
Click to expand...
Click to collapse
Thanks for answering my question. Now I simply need to find a really good ROM to use to load back onto my device. What I would like to do is end up with Windows Mobile 2003, but the device is locked at the moment.
Can someone recommend a ROM for me to load onto the device so that I can then unlock it and THEN upgrade to 2003? Or is there a 2003 ROM out there that will also unlock? Originally, I ended up in this predicament by upgrading to the 2003 upgrade from Rogers AT&T, but that locked the device on me. I then tried to use a cooked 2003 ROM, and that's where I am now, without a useable device.
Thanks for all replies!

Linger1974 said:
Rudegar said:
as you can read from the menu you type in all these options are to the SD card
and they are to backup i suppose
rom upgrading should start automatic when a sd card with valid rom is in the sdport
and you are in the bootloader
maybe it ask you i forget but it's not something you have to find browsing
the menu's
Click to expand...
Click to collapse
Thanks for answering my question. Now I simply need to find a really good ROM to use to load back onto my device. What I would like to do is end up with Windows Mobile 2003, but the device is locked at the moment.
Can someone recommend a ROM for me to load onto the device so that I can then unlock it and THEN upgrade to 2003? Or is there a 2003 ROM out there that will also unlock? Originally, I ended up in this predicament by upgrading to the 2003 upgrade from Rogers AT&T, but that locked the device on me. I then tried to use a cooked 2003 ROM, and that's where I am now, without a useable device.
Thanks for all replies!
Click to expand...
Click to collapse
First of all get the "Special Edition Rom" to your device Unlock it then cook any other Rom you prefer
Special Edition Rom at http://cuba.calyx.nl/~jsummers/XDA/XDA-developers-SER-v12.exe
Good luck

First of all get the "Special Edition Rom" to your device Unlock it then cook any other Rom you prefer
Special Edition Rom at http://cuba.calyx.nl/~jsummers/XDA/XDA-developers-SER-v12.exe
Good luck[/quote]
Thanks, Ramram. I'm sure I'll have more success this time, but it's just odd that I went from a 2002 ROM, which was unlocked, to the Rogers 2003 ROM, and the phone was locked after that.
I guess I should stay away from that Rogers ROM then?

Linger1974 said:
First of all get the "Special Edition Rom" to your device Unlock it then cook any other Rom you prefer
Special Edition Rom at http://cuba.calyx.nl/~jsummers/XDA/XDA-developers-SER-v12.exe
Good luck
Click to expand...
Click to collapse
Thanks, Ramram. I'm sure I'll have more success this time, but it's just odd that I went from a 2002 ROM, which was unlocked, to the Rogers 2003 ROM, and the phone was locked after that.
I guess I should stay away from that Rogers ROM then?[/quote]
Why to worry about the Rogers Rom you know now a way to unlock your phone.
I assume the Rogers rom is based like the At&t rom which it has the sound clipping bug , so I'd rather say that you could cook a T-mobile rom 4.01.16 WM2003 and try it it does not have the sound clipping bug..