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D800 1.11 bitrate patch

PostPosted: Wed Jan 23, 2019 7:04 am
by maxracingshox
Hey guys,
the latest 1.11 update makes the D800 work with any AF-P lenses.
While comparing the files, I found out that the 1.11 firmware stores the bitrate information in the same location as the 1.10 firmware.
Making the 64 mbps firmware hack work for the 1.11 firmware should be very little effort. However, I have not yet found out how to calculate the D800 checksum.
I see theses firmwares store the checksum in the 17th and 18th last bit.
@simeon, can you help? Maybe even implement the 1.11 firmware in your patch tool?

Re: D800 1.11 bitrate patch

PostPosted: Wed Jan 23, 2019 1:51 pm
by Simeon
The patchtool calculates the checksum, so if you make a patch with it (be it the C# original version or the C++ port) then the tool does the work for you..

Also there is a tool nikon-firmware-toolsFirmware PatchMakePatch that can make a "valid patch from" the original and altered files (which useful if you are just alter the decode bin)

Also you can post such patches here or email them to me or make a pull request on the github repo.