may I update Android 2.2 to Android 2.2.2 at my dell streak

At the beginning of excuse for my bad English

I have my Dell Streak since 19.Dec. 2010 bayed by the big internet provider redcoon in Germany Aschaffenburg. The numbers at the phone today are:

Model: M01M

Type: M01M001

E Service: 161 658 459 37

Service Tag: <ADMIN NOTE:Service tag removed per privacy policy>

PPID: CN-0WK2PN-74261-07O-001O-A00

IMEI: 354000030443297

Made in China

Android-Version 2.2

Baseband-Version: GAUSB1A131800-EU

Kernel-Version: 2.6.32.9-perf

OEM-Version:GAUSB1A131800

Build-Nummer: 12821

I had a (5 crashes) big crash of data with the notice “Prozeß com.dell.launcher wurde unerwartet beendet, versuchen sie es erneut, schließen erzwingen”, The notice did not leave any more. The end was every time a factory reset and after a new installation the notice comes again and so on. In this case I had Android 2.2.2 at my phone. I have send my Dell Streak to dell-support in ungarn and now is at the phone Android 2.2. and the function is since 4 day’s ok. Now I become from Dell-internet the notice to update my phone at Android 2.2.2. The Dell-support at phone say’s, that I may not update to Android 2.2.2, my actual software Android 2.2 is ok. Must it be like that, I want update to Android 2.2.2, but I no more  want have data crashes at my phone.

Thank you and best regards

 U.Kuhn