We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
After uvision became none responsive.
Opening the project, I discovered my entire last working file is blank empty. all last changes are gone.
Any way to restore it?
There is no recovery by default, but uVision offers several "File & Project Handling" features at the "Configuration" tab; see:
Related:
"How to turn on autosaving in Keil."
https://community.arm.com/support-forums/f/keil-forum/52086/how-to-turn-on-autosaving-in-keil