How to get full PS4 R/W permissions in OpenOrbis?

[turbo420]

Trying to replace /system_ex/app/NPXS20001/systembgm/bgm_main.at9 but I don't have permissions. I know can do it by using GoldHen ftp with the MTRW command but trying to do it in OpenOrbis homebrew app. Hoping someone would point me in the right direction. Thanks

 

[Kendek]

Use PS4-Xplorer, L2 + Triangle select Get Full R/W.