i think steveo is correct that you need to upgrade to 3.55ofw in order to fix your br playback problem. there is a tutorial on some other sites for getting br playback back on your console, but i do not have a link for you.
everything is happening so fast and yes lots of bricks happening too. i am keeping my console on 3.41 with a dongle for now, but hermes just released a 3.41cfw and a jailbreak payload that can be run on the cfw without a dongle. i am pretty sure this will not help you get back br playback, but i am just pointing out that by next weekend, there will be a dozen more releases.