129w ago - Earlier today the
PS3Break PS3 Downgrader was announced, and now the x3Max Team has made available a video of their PS JailBreak clone PS3 modchip dongle in action running PlayStation 3 homebrew on Firmware 3.50 without downgrading!
To quote from kbx.org (linked above): I was talking to one of the support staff from x3max and they notified me about their new downgrader which they are going to release later today. They have provided me with a video which shows the x3downgrade. I will update the blog when they send me files.
Seems like they got an device which can run homebrew on 3.50
but i think they are releasing an downgrader as well as the support guy told me.
Finally, from the video's caption: The 3.50 firmware is now Jailbreaked, no more need to downgrade !
The dongle can launch homebrews on PS3 with 3.50 firmware, without downgrade !
hope to find something usefull here .. hello 
...
I have the ps3 usb jailbreak adapter. Is it possible to load the hex from AT901287 to my Stick and downgrade a 3.50FW ? Because the new software of the ps3 usbjailabreak adapter says Version 1.2.7 add the function that you can reprogram ps3 usbjailbreak from any HEX file!
Someone know it's possible?