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Home > Technical > VBF file CRC calculation |
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sergio977 Member Since: 08 Jan 2016 Location: Italy Posts: 128 |
ouch...Alexander, I think your question is for a "very-advanced-Sunday-spanner-warriors" |
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23rd May 2016 6:17 am |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
Do you look for an application to do this calculation or do you want to know the details about which memory block is used in this calculation?
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23rd May 2016 8:44 am |
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sanya686 Member Since: 21 May 2016 Location: Moscow Posts: 5 |
Alex. I learned that you laid out on LR-club.ru. I have problems with calculate crc-32. HxD editor, issue is not something that should be, and that asking for help, how to count correctly. |
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23rd May 2016 11:04 am |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
Below there is a file where you can see from where to where (the selection) is the data block for CRC32.
Last edited by alex_pescaru on 14th Oct 2020 10:44 pm. Edited 1 time in total |
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23rd May 2016 1:54 pm |
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sanya686 Member Since: 21 May 2016 Location: Moscow Posts: 5 |
Thank you very much for the clarification. But I thought that SDD and gives an error for this checksum. I threw thoughts tied to the date of a file changes, so stopped at this crc-32. How do I know crc-16 is needed to verify the integrity of the control unit. If possible, send in the right direction. |
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23rd May 2016 2:57 pm |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
From my experience, at least on my car, the SDD doesn't check the CRC32.
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23rd May 2016 3:55 pm |
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sanya686 Member Since: 21 May 2016 Location: Moscow Posts: 5 |
I want to program a change .vbf using SDD, but I constantly when programming a message appears incorrect checksum file and therefore it is deleted from the catalog flash. So I ask you to help how to fix it. |
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23rd May 2016 4:33 pm |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
In a VBF could be as much as 3 different CRCs.
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23rd May 2016 6:01 pm |
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sanya686 Member Since: 21 May 2016 Location: Moscow Posts: 5 |
Thank you, it was clear. Please Greg777. Sincerely, Alexander. |
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23rd May 2016 6:28 pm |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
Some minor add to this old thread...
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14th Oct 2020 10:46 pm |
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MotionInc Member Since: 17 Jun 2019 Location: North America Posts: 1358 |
^^^^^Thank you, that tool could be very useful. |
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15th Oct 2020 7:04 am |
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Vanny Member Since: 06 Dec 2015 Location: Cheshire Posts: 437 |
A note of caution, VBFTool is not forward or backwards compatible. VBFTool 2.xxx can only be used with Version2 of the VBF format, something that has caught me out in the past! |
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15th Oct 2020 9:28 am |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
Like they say: let someone point out the single one cloud on the sky....
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15th Oct 2020 3:37 pm |
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