If you phone can't boot or bricked, here you can find some suggestions:
Many people backup using this app but when they switch to custom roms they can't restore their backups. But now that's very much possible...here's the link
2.1 Mini & Pro (2.1.1.A.0.6 & 2.0.2.A.0.24 & 2.0.A.0.504):
1.6 Mini & Pro:
Tools & Misc:
Please, if you see any errors, tell me! My english is very bad...