Good morning guys.
I use Mia ROM rooted fw 2.2.1 on my Galaxy SL i9300.
Can i flash directly this ROM on my device to update it or there are other best light ROM for my device?
I think you mean SL i9003? S3 (i9300) has no froyo.....
No, you have to look in thread for i9003, there is dhiru's port of CM11 (but CM10.2 works better IMHO). Before that you will have to flash twice DDLF2 factory image and root.
tetakpatalked from Nexus 7 flo