Below is a picture, and the announcement from their site, linked above:
Currently, news spreads on Internet regarding some brand dongle companies have capable of downgrading PS3 firmware from v3.50 to v3.41.
PS3Break dongle is ultimate testing. It will be officially launched in the next few days! please expect together !
So it appears all of the PS JailBreak PS3 modchip clone devices will utilize the PS3 downgrader functionality, and here is to hoping a free version also surfaces soon.
Stay tuned for more PS3 Hacks and PS3 CFW news, follow us on Twitter and be sure to drop by the PS3 Hacks and PS3 Custom Firmware Forums for the latest PlayStation 3 scene updates and homebrew releases!
you can semi-brick your ps3 if you update incorrectly or mess up the process. you then won't be able to turn on the ps3 as it will just give you an almost musical beep.
you will also not be able to turn off service mode with the second self file either. nore can you update again as youve most likely turned off the ps3.
the fix is simple though, just hard reset it and try to re-enter service mode. sometimes it won't work and sometimes it will - it took me two tries. when youre in service mode (you can only tell by the dongles light) - try the whole process again but use the modified 3.41 update.