With thanks to all who have posted solutions on the previous 37 pages Thanks left where I've used some of the article contents.
I've managed the hack on my DMREX-87 (Model suffix EC1K) which is a French/German Panasonic DVD recorder with a URC-3440 remote.
The dvd code was only 4 digits
The key codes are 6 digits
I used the following procedure:
1. Press DVD
2. Hold Magic button until led flashes twice
3. Press 0490 to program panasonic dvd code (note 4 digits only) led flashes twice
4. Hold magic until led flashes twice
5. Press 994
6. press magic (don't hold)
7. press 001911 (This sets value 00191 to button 1) led flashes twice
8. Hold magic until led flashes twice
9. Press 994
10. press magic (don't hold)
11. press 001202 (This sets value 00120 to button 2) led flashes twice
12. Hold magic until led flashes twice
13. Press 994
14. press magic (don't hold)
15. press 000653 (This sets value 00065 to button 3) led flashes twice
16. Hold magic until led flashes twice
17. Press 994
18. press magic (don't hold)
19. press 001804 (This sets value 00180 to button 4) led flashes twice
20. Hold magic until led flashes twice
21. Press 994
22. press magic (don't hold)
23. press 001435 (This sets value 00143 to button 5) led flashes twice
24. Hold magic until led flashes twice
25. Press 994
26. press magic (don't hold)
27. press 001556 (This sets value 00155 to button 6) led flashes twice
28. Hold magic until led flashes twice
29. Press 994
30. press magic (don't hold)
31. press 001227 (This sets value 00122 to button 7) led flashes twice
32. Hold magic until led flashes twice
33. Press 994
34. press magic (don't hold)
35. press 001178 (This sets value 00117 to button 8) led flashes twice
36. Hold magic until led flashes twice
37. Press 994
38. press magic (don't hold)
39. press 001299 (This sets value 00129 to button 9) led flashes twice
40. Hold magic until led flashes twice
41. Press 994
42. press magic (don't hold)
43. press 001230 (This sets value 00123 to button 0) led flashes twice
44. turn on the DVD
45. ensure drawer is closed
46. press 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 on the URC-3440 in succession.
Player will restart and you will be region free.
I had to unplug and leave for a minute then plug the power in again as the record button on the front of the dvd player was unresponsive. However now the player is region free and plays my region 1 and region 2 discs OK, recording works the same as before
Thanks to everyones assistance on this forum, I've managaed to multi region my original wharfedale, two Sony blu-players and now my Panasonic dvd recorder