Sony Stereo Code

Wondering if anyone can help...

CDX-M100tf SN:3507375

Needed 4 digit unlock code

Wasted £9 so far on software for every other stereo (8 volvo programs if anyone wants one)
Cannot find there supposed sony calculators

Try these - they work on other similar models, it'll be worth a go?

CODE 1: MODE SOUND OPEN ATT

CODE 2: ENTER OPEN meNU 6

CODE 3: OPEN DISC+ 1 LIST

CODE 4: SEEK- SEEK+ 3 OPEN

CODE 5: OFF 4 OPEN SOURCE

CODE 6: 2 OPEN DSPL SOUND

CODE 7: OPEN 5 ATT SEEK+

CODE 8: DISC- DSPL OFF OPEN

CODE 9: SEEK+ SOUND OPEN ENTER

CODE 10: DISC- LIST SEEK- OPEN

CODE 11: OPEN 4 LIST OFF

CODE 12: DSPL SOURCE OPEN 1

CODE 13: MENU 2 MODE OPEN

CODE 14: 5 DISC+ OPEN ATT

CODE 15: 3 MENU SEEK- OPEN

Its a 4 digit number code :S

I was under the impression they were alternative codes. Looks like google isn't always my friend :D