EOS R7 won't recognize Sigma 120-300mm F2.8

[JRichards2012]

I recently purchased a R7 with the purpose of pairing it with my Sigma 120-300mm F2.8 Sports.  However it will not recognize the lens. That lens works perfectly with my adapted R6. And the R7 works just fine with other adapted Sigma lenses. Yet refuses to recognize that Sigma lens that i purchased it for. I have cleaned the lens terminals, taken the battery out of the camera, and replaced.  It still will not work.  I updated the firmware to 1.6.0 as well. Nothing works. Any information on this would be greatly appreciated.  

[shadowsports]

🤣 I think you mean Rick and firmware for the 120-300 is available if you have a USB Dock for EF, but there is nothing for the R series if that's what you meant.  I'm going to let my dock go with my last Sigma lens, a 150-600c.  Waiting for it to go to a good home.  

[March411]

LOL....Sorry you are correct, I did mean Rick. I am not even sure where Steve came from when responding.

The dock has been a bonus for me also, the plan is to hold onto it until (or if) my Sigma glass is replaced. Like you (posted screenshot) I didn't see anything in the firmware release to assist with compatibility with R bodies but it may be worth a shot if the OP has a dock.