1. Download tinycore-redpill
 https://xpenology.com/forum/topic/7848-links-to-loaders/
 https://github.com/pocopico/tinycore-redpill

2. Burn IMG file to USB stick

3. Boot tinycore from USB stick
 Login credentials: tc/P@ssw0rd
 Update & Upgrade
 ./rploader.sh update
 ./rploader.sh fullupgrade

4. Configure System-Specific Parameters
 USB flash drive VID/PID      : ./rploader.sh identifyusb
 Serial number/MAC  : ./rploader.sh serialgen DS920+ realmac

5. Build the Loader
 ./rploader.sh build geminilake-7.1.0-42661
 exitcheck.sh reboot

6. Download the DSM install PAT file
 https://www.synology.com/en-global/support/download