I contacted OneForAll Support and they sent me a list of "magic" codes to program the missing buttons myself ;)
1. Select the device using the MODE-button 2. Press and hold the MAGIC-button until the LED flashes twice 3. Enter 994 and the LED should flash twice again 4. Press the MAGIC-button again quickly 5. Enter the code from the list below 6. Press the button you want the new function assigned to 7. The LED should flash twice again to confirm
The codes: ---------- 00437 0 00697 1 00695 2 00443 3 00692 4 00440 5 00438 6 00698 7 00565 8 00313 9 00234 Applications 00293 Back 00360 Blue 00299 Channel Down 00473 Channel List 00551 Channel Up 00248 EPG 00228 Exit
00360 Fastext Blue 00363 Fastext Green 00615 Fastext Red 00612 Fastext Yellow 00363 Green 00725 Home 00308 Info 00375 Input 00251 Live TV 00725 Menu 00378 Menu Down 00505 Menu Left 00245 Menu Right 00630 Menu Up 00566 Mute 00426 Netflix 00632 OK 00353 Pause
00605 Play 00568 Power 00486 PVR 00486 Record 00615 Red 00233 Search Forward 00485 Search Reverse 00372 Setting 00231 Stop 00506 Subtitle 00680 Text 00617 Timeshift 00683 Volume Down 00420 Volume Up 00612 Yellow 00351 YouTube