A description on how to downgrade to WM2003SE?

[Mastiff]

OK, I'm just about to take the plunge and try out the new WM5. But if it doesn't work well for my use, are there any instructions on how to get the phone back to where it was? Right now I'm doing a full Sprite Pocket Backup, then I'm gonna do a ROM dump to an SD card of the current ROM and finally follow the upgrade instructions in the Wiki. How do I then get back, if necessary?

[mamaich]

You can do a normal SD-backup with mtty, and install WM5 as usual. I'd recommend you not to repartition DOC. In this case the content of extended ROM would not be touched and you'll need to reflash only main ROM (nk.nbf file) when you'll decide to return to 2003SE.

[Mastiff]

Thanks! Actually the extended ROM is the thing I worry the least about, since I have a cooked ROM anyway. Which probably means that I can repartition anyway, right? So to downgrade I just partition the unit back to where it was and then do the opposite with the SD card - go into bootloader mode, push in the card and wait for the downgrade to begin. Is this correct?

[mamaich]

when you repartition the device the extended ROM password is reset. And when restore the old size with that tool you'll be unable to lock extended ROM and it would always be writeable

[J4n3000]

How to do a SD-backup and where to get the program.
Is it enough if i just ext-rom set to the old size (16384??? am i right) and just copy a files wich were in rom before back to rom, lock and hide the rom and do an downgrade. Is that works???(or it is another way to backup teh ext-rom and how to).

EDIT: I just download the ext-rom the same version as my and there are the same file in there wich i copy from ext-rom so i think thats OK to copy(please correct me if I am wrong)

Wich is the original size of ext.ram(16384i think but I dont now)???

[Mastiff]

Well, I see no reason to go back to WM2003SE anyway. There are a few annoyances (like WLAN turning itself off when the unit's off and TomTom GPS pairing not working like it should yet), but the plus sides outweigh them.

[J4n3000]

I just need to now that if something goes wrong, if it is going to work i wont to stay on WM5 but you now, I realy don't wont to do my phone defect.