Does flashing ROM with different baseband version brick device?

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http://androidforums.com – I am trying to flash the original ICS stock firmware to my S3 but I've yet to find the ICS firmware that is identical to my baseband version:I9300UBDLI2 Does flashing with another ROM with a firmware like I9300XXALF2 brick my device? Can anyone give me a link to the firmware with I9300UBDLI2? (General)