Can I Update my T-Mobile G1 (Also known as the HTC Dream) so it runs Android 2? Is it possible to do this without rooting the phone?

The same thing is happening with the new Gmail as happened with Voice Search. This again? adb remount adb shell rm /system/app/Gmail.apk adb uninstall com.google.android.Gmail

Can anyone that's used it list the relevant benefits and drawbacks? I'm actually more interested in the drawbacks and limitations because its not hard to find praise for it. Edit: Ooops, I forgot to mention, original Droid currently running Android 2.2

The settings menu in CM6 lets you change the maximum per-process heap size (internally, that’s the dalvik.vm.heapsize property). What are the practical effects of raising or lowering that setting? On my G1, I changed it to 12m from the default of 16m, and I noticed that switching applications feels faster, but I wonder if it will cause some applications to run out of memory sooner.

Last year I got a free Android phone at a Google event, and I would like to upgrade it to the latest Android version (probably with Cyanogen). What is the quickest/safest way to do the upgrade? It is a developer phone, so: The Cyanogen instructions do not mention my phone. I have no data plan, but the above instructions say "data plan required" (workaround) HTC Magic, Model Number GDDJ-09, Build CDB56, Android 1.5, details: SAPPHIRE EVT1 32B DEV S-ON G …

I have a HTC Hero CDMA that I upgraded to Cyanogen 6. I'm on version 6.0.0-Heroc-testing2. Before installing Cyanogen, I had the official Twitter widget and official Facebook widget on one of my screens. Ever since upgrading, I have not been able to add the Facebook widget or Twitter Widget. Both of the apps work fine, but when I go to the list of widgets I can add, neither of them is there. I'm using the default home screen/launcher that …

Whenever I try to install Voice Search I get "install failed" error in the notification bar. Supposedly it has something to do with signatures but I know better than to ask Cyanogen about it. Any ideas?