Hello. i am expert in PLC/HMI/SCADA in Siemens.
With your problem, you have 2 solutions;
- If HMi is corrupt. you replace with a new MP277 and restore WinCC runtime with .FWX file
- If you want recreate program, you can only create new program, it is not possible to create program from backup .FWX file. so you can create new program similar old program but it will get HIGH PRICE
Could we discuss more?
Thanks.