Help~ Atom Exec How to downgrade to WM5

[admin88hk]

Please check it out for the latest news at here.
http://forum.xda-developers.com/showthread.php?t=362338

I make the upgrade from WM5 to WM6 by the following post.
ATOM EXEC WM6 AKU0.7a.0 WWE 20071117A1WWE with STK (http://forum.xda-developers.com/showthread.php?t=333165)
ATOM EXEC WM6 0.7b.0 WWE 20071216A3WWE (http://forum.xda-developers.com/showthread.php?t=352221)

But I reaily can not accept the Bluetooth headset can not use for phone.
I want to downgrade to my default OS, WM5.
I had downloaded the Offical WM5 roms in my computer.
But I tried to downgrade by DSUU directly after the Atom Exec sync with PC.
The error message prompted with "Error Country ID or Device id Error"

I also tried in other mode, (Camara + Reset)
It can detect the CE IMAGE ROM, but unable to detect the Device Rom version.
So the DSUU will show the error "Error: Connection Error."


How can I downgrade the device the Atom Exec to WM5 ?

[katon808]

have you tried MN1 EBOOT?

http://forum.xda-developers.com/showthread.php?p=1684559&highlight=EBOOT.NB0#post1684559

[tjkhattak61]

My friend admin88hk be very careful while playing with the bootloader using sdcard or u will have a bricked device like mine :mad:. Read the complete forums on upgrade of atom exec then proceed with caution and cross ur fingers during the procedure.:D

[tjlabais]

hmmm.... try this first before you flash with SD Card

http://forum.xda-developers.com/showthread.php?t=335271

cheers,
TJ :cool:

[admin88hk]

Is it follow by this step, the device can be fully backwaard to WM5, if all of the step are success.

After that, the O2 connect and O2 Software can be used or not ?

[admin88hk]

I am looking for a success case.
Is there anyone has been done the steps which are posted about MN1 EBOOT (http://forum.xda-developers.com/showthread.php?p=1684559&highlight=EBOOT.NB0#post1684559)??

Can reply me or give me confidence?? Thanks.

[homer285]

am looking for a success case.
Is there anyone has been done the steps which are posted about MN1 EBOOT (http://forum.xda-developers.com/showthread.php?p=1684559&highlight=EBOOT.NB0#post1684559)??Well it certainly has'nt been thought up on a whim, if thats what you're thinking. :D
Search and find your confidence mate, heck the link has been given to you!
This topic has been discussed in detail in all main Atom threads, try the link given by tjlabias(<-- btw hope you're well mate! :D) after if no success then EBOOT method

[admin88hk]

I have follow the instructurtion for go back to WM5.

But I get a problem in the step 3.

I have download the EBOOT.nb0 and copy to MiniSD card.
After I insert into Atom EXEC, Press camera+reset.

The Screen will post the transfer in completed after 3 - 5 seconds the screen was load.
But the Atom EXEC was not action come out after the following 3 minutes.
So I press camera+reset again.
The screen still at MN2......

How can I change the bootloader to MN1........
any other solution to do it ?
I am reaily can not stand for the phone can not use the Bluetooth headset.

I also has found a some threads also related, but all of them is not work.
http://forum.xda-developers.com/showthread.php?t=331818
This case was very seems with me.

* I am uploading the image to webhost, I will update the post ASAP.

[columbiazulu]

edit: I searched further and found that it could be done. Sorry for the unnecessary post!
-----
on a side note, is it possible to use the ROMs shown here for WM6 on my o2 which currently has WM5? Or do I first have to get an official upgrade to WM6 and then install the new ROMs here?