@hcet14 firmware updates DO NOT effect any bandwidth or option(s) hacked or otherwise.
I have been upgrading to newer firmware for the last 10 years without any issues.
Including the newest 00.04.05.02.08 version. My bandwidth and all options hacked.
I have not heard of any issues but I only get my firmware from
the Rigol North America site just to be safe.
Be sure the scope is warmed up and do a calibration cycle after upgrading and power restart.