Synology - Upgrade 1515+ to 1517+

Worked like a charm

https://github.com/prt1999/Synology_model_upgrade

Ran the above process

Forum Discussions

https://xpenology.com/forum/topic/69328-converting-ds1515-into-ds1517-dsm-72/page/3/

https://xpenology.com/forum/topic/69328-converting-ds1515-into-ds1517-dsm-72/

Revert Back to 1515+

Synology DOM module pinout

Plug into the 2nd row, i.e. straight pins, with normal USB assignment.
2 red
4 white
6 green
8 black