Update K800i software will simlock it again?

[RevengeFNF]

Hello, i have a K800i with Software version R1GB001.
Its a very old software version.


When i bought it 2 years ago, someone unlocked it for me.

Now, if i update it using "Update Service" software. Will the phone got simlock again?

[riders4sia]

i depends of how he unlock, patch unlock or code unlock, if it is patch unlock it will relock back again and if it is code unlock, it will not relock back but it is not advisable to use SEUS coz it upgrade your EROM CID to CID53 which people don't want it. Try here to upgrade your firmware and unlock for free : Flash your phone and How to apply or remove patch using SETool 2 Lite - Top Sony Forums and here : Remove SIM-lock patch generator - Top Sony Forums