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Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management |
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#61
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So process is as follows, swap logo, adjust last 3 bytes of file with new 24 bit checksum. That means we can change anything we would like in that file magic iso replace the navboot file Alcohol 120 modify the lead out to match the image now lets figure out the bit to flip to turn on OFF ROAD GUIDENCE! http://www.bimmerboard.com/forums/posts/139364/ |
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#62
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Hi,
i have changed the sw_rel.tbl file on the T26.09a cd to the original V26 sw_rel.tbl file. All other file is original from T26.09a, and not modified. Result: after loadig original BMW logo and 4-1-60 Software Version in Set menü ! But no Birdview option. Janos |
#63
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what do you use to calculate the 24 bit checksum??
so you would change the last three bytes with this #? is that in hex then??? thanks a lot guys! |
#64
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What software are you using to work out the 24bit CRC checksum? Rgds |
#65
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Here is a free one http://www.jonelo.de/java/jacksum/
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#66
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Quote:
Martin |
#67
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it takes file ? excludes last 3 bytes ? calculates crc 24 and writes checksum to the end of file in place of excluded ones? or it calculates checksum on all file? thanks |
#68
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I like this stuff. Reverse engineering at its best.
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#69
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Quote:
I've got the jacksum working, but the problem I have is if I take the navboot file, remove the the last 3 bytes, then pass it through the jacksum app. I get a different checksum to what is in the file. So the question is: what part of the navboot file do you chop from the file before passing it through jacksum? I hope you understand....cos I only just do! |
#70
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can someone post a clone cd or iso image of the 26.09a update with the plain jane mkiv ===bmw=== logo? you'd be my hero. i know just enough hex to screw up my nav drive, i'm sure.
thanks |
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