Wanted: Firmware for Razer Mamba Wireless RZ01-00120200

Hi,

I  have an old Razer Mamba Wireless mouse. Not sure what year I purchase it but would like to update the firmware to the latest. The mamba softrware says the firmware is 1.08 but google searching took me to a page that had the 2.06.02 version but downloading it just installed the configuration software and not the firmware. This is the page I found:

https://mysupport.razer.com/app/answers/detail/a_id/3777/~/razer-mamba-2012-%7C-rz01-00120-support-%26-faqs

So wondering is there a firmware available?

Thank you.