Root How to Upgrade custom rom to v2.3.3

[msprakashmmc]

hi guys, I'm using simple streak 1.2 on my rooted dell streak 2.2.2.. I wana upgrade it to official 2.3.3 so that I can use dj-steve ginger streak.. So I need to know 2things..
1.Is this update 2.3.3available in India..? and where can I download the official update.PNG.. ?
2. can u guys provide link for update.pkg for 2.2.2 so that i ll install official rom after unrooting it and will upgrade to 2.3.3..
Thank u guys..