Upgrading and backup

[hansof]

I want to upgrade my ROM, especially the Radio ROM. But I am a little nervous, as I feel that this is an operation into the deep and decisive structures of my Jasjar.

I am using the excellent backup program Spb backup.

My question is:

If anything goes wrong when I try to update the ROM, will I still be able to retrieve the old version with Spb backup? Or will the new ROM be so deeply entrenched in the Jasjar that I will be unable to return to the old version?

Thankful for answer from someone who knows.

[jaceuk]

i saved the same software to sd card and found after ROM change i was able to roll back

[shuflie]

I haven't actually tried it my self but sprite backup has little tool that you can use to recover a backup across a ROM upgrade. You do the backup as normal, hardreset the phone and run the program to let spritebackup know what the clean OS looks like, then do your upgrade and restore the backup, but point it at the file produced upgrade tool. When I upgraded there were a few things I didn't want to carry across into the upgraded phone, so I just backed up my contacts and reinstalled any programs I wanted after the upgrade.

[lion2000]

just started and upgrde, the unit died, i tried to install the old O2 Rom but the exec stays in boot mode with a funny screen, any help please?

lion