Updating firmware through SEUS clears sim lock patch?

[jasmin]

why is seus changing all phone to cid53

CID = This "number" defines the version of SE's protection present in the phone.New CIDs are deployed from time to time, for the sole reason of preventing them from beeing unlocked/flashed/tampered with by non-SE service tools. Current CIDs in use by SE are 29/36/37/49/51. SE-based LG/Sharp phones use the same system (but different versions). The OTP (One Time Programmable memory) and EROM of a phone might be protected by different CIDs, usually the case in newer K600s/K608s.

Nice day

[sergage]

New CIDs are deployed from time to time, for the sole reason of preventing them from beeing unlocked/flashed/tampered with by non-SE service tools.

So are there any offical SE tools (besides SEUS) with which one can flash a phone using desired MAIN and FS and such?

i have a k850i which have been upgrade to CID53! is there are any tools where i can downgrade back to CID 52??

The answer, unfortunately, is a firm NO.