Here is the Alltel stock rom:
ftp://ppcgeeks.com/Diamond/Stock%20R...ltel_Stock.rar
Download it to your pc and sync with your pc and then start the flash.
If you can't sync turn off your device, then push and hold the volume down button and while hoolding the volume down button down press and release the power button and the tri-color bootloader screen will come up. Then connect your device to your pc and towards the bottom of the screen on your device it should say usb. Then start the flash.
You can manually update your prl by going to the start menu and clicking on settings, then the system tab, and then scrolling down to the Update PRL icon and clicking on it.
Changing radios may improve signal strength but also may decrease strength. It's a crap shoot.
Good Luck!!
