Sandisk flash drive not detected

I was update my app. Yesterday and when i was attach my flash drive, it can’t be detected
I was update my flash drive firmware to 4.4.8 from my window PC
I was reinstall the ixpand flash drive application
Even i was reset my iphone after that i was erase my iphone but i have same prob.
First i was thinking my flash drive was broken but when i was see flash drive from setting then i realise and find same people like me and i was find it on google
Please solve my situation my mind is stuck on this

If you enter the DiskPart menu using the elevated command prompt, and enter the ‘list disk’ command, does it list your drive?

If you then type ‘list vol’, what do you get back?