hey guys everyone wants to know how to get stock froyo on a alltel milestone well i figured it out....i have the latest build (2.2.1) running on a milestone with MMS and everything....you need a verizon droid a855, a milestone, both rooted and a little time....
1.first backup all apps on the verizon droid with Astro or something similar and factory reset it so its clean for the milestone
2.Download rom manager on both phones
3.on the verizon droid, open rom manager and flash SPrecovery...this is the only way it would work for me
4.boot into sprecovery on the verizon phone
5.go to advanced backup and backup everything...name it what you want
6.back it up!
Now on to the milestone.
7.take the micro sd card out of the verizon droid and put it in the milestone.
8. open the market on the milestone and download APN manager.
9. open APN manager and backup APN on the milestone
10.open Rom manager and flash sprecovery like before and reboot...for some reason my milestone didnt like booting into sprecovery at first if it just goes to stock recovery or bootloader reset and try again...
11.select advanced recovery
12.pick the backup from the verizon droid you saved earlier and pick all options
13.let it do its thing.
14.after a reboot you will be on froyo!
15.download APN manager again and restore the alltel apn backup from earlier
you can now put the sd cards into their respective phones....the phone i tried this on has MMS and everything....just letting you guys know how it's done