Good day to all!
I recently installed a dashboard from WRX 2015 in my forester SJ XT, but some functions stopped working.
It is required to reconfigure the dashboard.
I've been trying to figure out a dump from WRX 2015-2016 for several months.
Some technical information:
Dashboard manufacturer: NS;
EPROM: 93C76
Processor: NEC V850
What is achieved at this moment:
? According to my assumptions, all basic parameters of the Dashboard are stored in the first 3 lines of 10 bytes each.
? Each line with parameters consists of 10 bytes. The first 8 bytes are parameters, the remaining 2 bytes is the checksum.
? A checksum is required to verify the integrity of the data in the line with the parameters.
? The checksum in calculations uses NOT, since if the entire line is filled in 00, the control panel starts with the checksum FF FF, and vice versa.
? The test software-hardware complex has been assembled for the firmware and dump test of the instrument panel.
What i managed to find out:
By means of the experimental checksums, the following options were found out:
B1-00-00-00-00-00-00-00; CRC = 4E-00
B1-4E-00-00-00-00-00-00; CRC = 00-00
B1-27-27-00-00-00-00-00; CRC = 0E-00
B1-27-13-14-00-00-00-00; CRC = 2E-00
I ask for help. An algorithm is needed to calculate the checksum.
I believe that in this community I can be helped.
If you need sponsored for the algorithm please PM me.
Best regards Roman.
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