Different programs for immo off EDC16U1

[Mrpiston]

Hello, I'm trying different programs to remove the immobilizer of a Seat Altea EDC16U1:
03G 906 016 KL
0 281 012 922
These are the results:

EcuTeacher - EDC16Calc - EDC16Immobypass - ImmoTool 1.5
00000156: 73 60
0000015F: 2B 3E
00000176: 73 60
0000017F: 2B 3E

AETOOL
00000156: 73 60
0000015D: 01 FF
000000176: 73 60
00000017D: 01 FF
00000017E: F8 B1

Immo Universal Decoder3.2
00000156: 73 60
00000176: 73 60

Ultraprog
00000156: 73 60
0000015E: F8 FF
0000015F: 2B A0
00000176: 73 60
0000017E: F8 FF
0000017F: 2B A0

I read the Eeprom by BDM 95320
Why these differences?
Which one do I use?
Is it better to desolder and read the eeprom with a programmer?

[jakesman]

EDC16eepromCalc.exe
i use this one from vagdashcom.de

[kiszka]

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