Well, it's more like putting a Bugatti Veyron sticker on a Prius and make someone believe ist a Veyron. That's not impossible. 
I don't think the Firmware check is that intelligent...
I don't think the Firmware check is that intelligent...
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Tutorials and Creative Uses / Re: Firmware Update/Downdate?
April 09, 2020, 09:22:59 AM
Hi,
I now have a 5D3 with 1.3.6 after a repair...
I'm not a programmer (just a bit), but wouldn't it be possible to take a firmware of 1.3.5 and "rename" it to 1.3.7 so that it is possible to run an "update" to this Firmware in the cam?
I tried it by renaming and changing the version in the file with an hex editor... as expected no success. The cam tried to update but then stopped, because there is a checksum somewhere in the file. If there would be a possibility to correct this checksum...
After installing the 1.3.7 Version of the 1.3.5 firmware, there would be the chance to downgrade to 1.2.3.
Any suggestions? I would try...
I now have a 5D3 with 1.3.6 after a repair...
I'm not a programmer (just a bit), but wouldn't it be possible to take a firmware of 1.3.5 and "rename" it to 1.3.7 so that it is possible to run an "update" to this Firmware in the cam?
I tried it by renaming and changing the version in the file with an hex editor... as expected no success. The cam tried to update but then stopped, because there is a checksum somewhere in the file. If there would be a possibility to correct this checksum...
After installing the 1.3.7 Version of the 1.3.5 firmware, there would be the chance to downgrade to 1.2.3.
Any suggestions? I would try...
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