You can't download from fw1.11 you have to use a magic key as dji stopped the downgrade option but if you do use the magic key you can go straight to fw1.08.
If you're still stuck im happy to help
You just need to have the firmware for the x3 to match the firmware that's on the inspire.
You cant use the fw that you use for x5, x3 is a different name but will match what you are using.
No problem at all , let me know how to send it to you.
I've tried to upload the zipped fw bin file but it says its too big
This is the you tube video i followed and part 2 of it and all worked well for me.
Part 1 ...
Part 2 ...
Hope it helps
When I downgraded my inspires from fw 1.11 to fw 1.08 I didn't do the inbetween fw's I went straight to fw 1.08 with the magic debug file and it worked fine for the x3, z3 and x5 cameras