Currently i am using HTC Hero SDK 1.5 and as we know that right now Android 2.2(Froyo) version is running, so i am planning to upgrade from 1.5 to 2.2.

Regarding Updating, i am having following doubts:

1. how do i update it ?

2. is there any selection options provided to update? for e.g. i want to update my 1.5 to 2.1 instead of 2.2, 2.0 or any else.

3. Are there any issues already occured with Android 2.2 ?

4. What if i want to down-grade to lower version, is it possible? (i.e. rollback to older version)

pls suggest me idea or solutions.

Thanx

Currently I am using HTC Hero with Android 1.5 and as we know right now Android 2.2  (Froyo) has been released, so i am planning to upgrade from 1.5 to 2.2.

Regarding updating, I have the following questions:

1. How do I update it?
2. Is there any selection options provided to update? For example I want to update my 1.5 to 2.1 instead of 2.2, 2.0 or anything else.
3. Are there any issues that have already occurred with Android 2.2?
4. What if I want to down-grade to lower version, is it possible? (i.e. rollback to older version)