K550i Flash-insert correct SIM

[platijet]

Thanks for advice. One more question:how can I find out if my phone has the quick access patch already installed?It is a second hand phone...

patch unlock: if you fash your phone phone will lock again. in your case i think someone else allready had aply the unlock patch. do not flash that phone with SEUS,because it will upgrade CID to 53 and then phone needs special and expensive equipment for unlock