Failed to debug mp157-m4 through linux core

[suffering]

when I wanted to debug mp157-m4 through linux core,I got a failed return

the reason why it failed was the fw_cortex_m4.sh script had no excutive permission

I tried chmod +x for getting permission,but the next time I clicked the debug btn and I found it was covered by the original one.

Any method to solve this problem?