Here it goes. I have a G2 running Android 2.2.1 with CM 6.1.1 Vending.apk was originally 2.2.6 so I updated it to 2.2.7 Check version by going to Menu/Setting/Application/Manage applications/... Look under Downloaded if not check under Running for Market. Click on it and check Market version (your version) I tooked the Vending.apk file from Vending-2.2.7-signed-testkeys.update.zip and replaced it with the Vending.apk from Black_market_3.zip. You can use 7zip,Winrar or any program that will access these files. system/app/Vending.apk <- change this file. Run BlackVending-2.2.7-signed-testkeys.update.zip on ROM Manager Let you phone reboot check your market and let me know. just run the update.zip on ROM Manager All have WORKED.