BMW MILEAGE REPAIR HELP

[Nchafuan]

Hello, i am trying to reduce the km on a 2009 BMW E60 530i.
I have read both the dash and the cas files which accompany this text. So the mileage is at 174304 and i wanna reduce to 74000; inside dash is eeprom D80W80.. and cas is OL15Y so when i calculate my new mileage, 74000= 12 11 but when i try to write with the new milleage it refuses to write and got me thinking whether i did not calc it well.
So please could someone help me calc for me and also reset mileage in cas 3

[mobinec]

Bad read,read again original files from CAS and Dash...

[tecnicuadro]

brother seems to be misread

[Nchafuan]

Ok thanks for letting me know, it's like 11:30pm here now, I'll read again first thing tomorrow morning and post.

[epd1221]

First 2 lines need to be erased with eraser for you to modified kilometers on dash

[Nchafuan]

So is the file ok? Because I risk destroying the ori file if I erase the chip

[Nchafuan]

Thanks alot epd1222 I erased the first two lines and wrote the new mileage successfully, and it's also true my cas file was not well read, I read the first file as 1L15Y instead of 0L15Y: so this morning I re-read and also reset the mileage in line 00B0, thanks for your support