I can confirm the hack shown below works on the new Panasonic BD35 Blu Ray player for DVD playback, I presume it will also work for the BD55 too.
I did it using an old One for All - URC 8305 Kameleon 5.
Just a couple of points to note when using the Kameleon.
1. Use the Key-Magic button and not the code 994.
2. The buttons on the Kameleon are very sensitive and it's easy to press the buttons for too long once you have programmed and send the same code twice. For this reason I set the 1-0 key press sequence up as a Macro on the RED button and it worked fine.
Cheers,
Nick
prepare:
1. select DVD device on remote
2. hold magic button until the DVD button blinks twice
3. enter device code 0490 (DVD button blinks twice)
program buttons with the following codes:
1. 00191
2. 00120
3. 00065
4. 00180
5. 00143
6. 00155
7. 00122
8. 00117
9. 00129
0. 00123
1. hold magic button until the DVD button blinks twice
2. press 994 (DVD button blinks twice) (KeyMagic on a Kameleon)
3. press magic
4. enter 5 digit code from above
5. press button (1,2,3 etc..) where to program it (DVD button blinks twice)
6. press ESC on the Kameleon
7 repeat steps 1 to 6 for all keys.
Switch on DVD player, make sure theirs no disc in it.
Press the One For All Remote buttons in the following sequence
1, 2, 3, 4, 5, 6, 7, 8, 9, 0
If all works ok the Blu Ray player will reboot
When its finished it will not actually tell you its region free, just simply try it with different region DVDs.