Creating bootable SD-Cards from eMMC fails

I tried to generate a bootable SD-Card using the script
It seemed to work but when I try to booting from this SD-Card (starting the flasher) the BB-X15 ran into Kernel-Panic.
It looks like that a wrong flasher has been installed into uEnv.txt at the SD-Card. After I changed it to

I am using the Debian Image 4.9.35-ti-r44 (from 2017-07-02).
Are there newer versions of the scripts in /opt/scripts/tools/eMMC or where can I find it (GitHub?) to check for updates?