Auto update DD-WRT from Synology server Task scheduler

[MAL0W]

I don't have a lot of knowledge of programming language but I know how to schedule a task on my Synology NAS using custom scripts, I know that maybe it's a lot to ask but could you help me create my script to update my router tplink_tl-wdr4900v1?

My latest firmware would be this: https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2020/01-18-2020-r42015/tplink_tl-wdr4900v1/

My IP router: 192.168.1.2

Through the Synology task scheduler I can create the schedule (for example once a month) and notify me by email adding the log

• This script that I use in my Synology to update my PLEX server may help: https://github.com/martinorob/plexupdate

Thank you for your help and your time.