I just upgraded from Alpha 3.1+ACS FB21 to Alpha 4 while keeping my data intact. Here's how:
- Boot to ACS Recovery
- Flash CM7 zip
- Immediately boot back into recovery (adb reboot recovery, or Advanced > Reboot Recovery)
- Now in pure CWM, flash the new CM9
- Wipe cache
Thanks, sbrissen & team!
Samsung Galaxy Note II (SGH-T889) + JellyBeer (CM10.1)
T-Mobile Monthly4G prepaid $30/month. "TWO-YEAR CONTRACTS ARE EVIL!"
History: Palm III → Palm IIIxe → Palm Vx → Handspring Visor Prism → Sony CLIÉ NR-70V → Palm TX → iPhone 3G+jb → iPhone 3GS+jb → HTC Evo 4G+CM7 → Samsung Galaxy S2+CM10
If I've helped you, then please DON'T press the thanks button for anyone who begs for it. It's very annoying.