Why "CSE Flash" option does not appear? LG FLash Tool

i have been watching videos about how to downgrade LG G PRO F240S but they said it can be downgraded with the CSE flash option, but it does not appear for me.. Do you know the problem? i have tried on 2 of my pcs.:(:(:(

Battery estimate does not appear on GP 5.1 Galaxy S4

How do I put estimated battery back in the GP Edition 5.1 on the Galaxy S4? it no longer appears to me when is loading
Sorry about my English