Just thought i should mention, I followed this advice yesterday and it worked with a few tweaks.
-> In the first tutorial, there is a screenshot missing, do exactly the same thing you did with the MAIN file but using the FS file.
-> in the first tutorial, do not follow the last step ( flashing the lightsettings )
->in the second tutorial, i found that the executor only supported R8BE001. So i had to flash it using K770_R8BE001_MAIN_GENERIC_VI_RED53.mbn. Then once i applied the QA patch to this i flashed the main of R8BA024 , then applied QA , simunlock (still in the same session ) and the flashed the FS and custom.
note: if you fail to apply the quick access patch directly after flashing the main (without disconnecting) you have to start over and flash back to R8BE001
ALWAYS run BOTH the main and FS files through babeck and ONLY use it if it passes.
The ones that did not pass babeck i just googled the filename to find an alternative download