why my d2 not install Android 2.2 beta?

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i dataformat my sdcard, then download Latest release 2.2 Froyo Beta v2,and install it。 but,not successful。howerever,replaced Latest release 2.1 and install it, it can be runing normally。but no sound,no gprs。

please help me!

the sound is a known issue with android on the diamond 2
gprs needs to be set up by adding the APN information into the settings, or also checking your startup.txt and removing the "force cdma" entry

any issues with the 2.2 beta please post in the relevant thread, don't add a new thread as it just causes congestion in the forums.