This is the read up and how to hack your camera as it is all at your own risk maybe the Hero 6 can be jacked to the hero 7 soon coming out.
GoPro Hero 1080P 2018 to Hero 5 Black firmware patch
You may have come across this website a while ago:
and been frustrated by the lack of instruction and other info out there.
I bought a Hero 2018 yesterday and within an hour had it hacked into a Hero 5 Black.
I still won't hold your hand, if you don't know how to zip/unzip, use windows command prompt etc. Essentially if anything below isn't clear enough - you probably shouldn't try this.
Anyway, the missing information is:
You need to have an UPDATE folder in the root of you sdcard with these 4 files :
patched camera_firmware.bin from 2.6 Hero 5 firmware
hd5_update.txt from 2.6 Hero 5 firmware zip and CAMLOAD:0 set
copy of hd5_update.txt renamed fwupdate.txt, CAMLOAD:0 set
The Hero 5 Black 2.6 firmware can be downloaded from the GoPro website under manual update, you will have to enter a serial number but plenty are available on images.google.com.
Extract the zip into a root folder called UPDATE on your sdcard and edit/create the text files as per above ensuring for both:
CAMLOAD:0 CAMERA:1 HIBER:1
The trouble I then had was, how do I modify the camera_firmware.bin?
The clue is actually in the above link - the site shares a .diff file for download!
Simply download and extract bspatch for windows from: https://www.romhacking.net/utilities/929/
Then copy camera_firmware.bin and gethypoxic.com's diff file into the bsdiff folder. Then from command prompt within the bsdiff folder run:
bspatch camera_firmware.bin camera_firmware_patched.bin h5to2018.diff
This will patch the firmware, performing all the manual steps the site describes. Be sure to check the SHA1 checksum against the one on the site above (there are plenty of sites that let you do upload files & display the SHA1)
Now copy camera_firmware_patched.bin back to the UPDATE folder on your sdcard and rename it camera_firmware.bin
You should now have the above four files ready to go on the sdcard in a root folder called UPDATE. Insert the sim and turn on the camera, it will go through the update process.