Or, if you have R4CB020 firmware, you can apply this patch:
If you have another firmware, flash first R4CB020, then apply patch.Code:;W550 SW-R4CB020 ;REMOVE OTP <-> GDFS, Please Wait problem ;(C)Forum.GsmAria.com ;Forum.GsmAria.com 448C030E: 8AB0041C 012070BD