I have a Sony app (Action Cam) which is hard coded to transfer data from their FDR-1000V camera over WIFI to use only internal device storage /storage/emulated/0/DCIM/From Action Cam and this cannot be changed in the app. On most devices the internal storage is too small and in this case I want to transfer up to 128GB. It is running on a T705 tablet, 4.4.2 (there is no 6.x version of the app and it refuses to install on my S7) which has an external SD card, or it could have a USB stick connected via an OTG cable. I found this https://play.google.com/store/apps/details?id=com.buak.Link2SD&hl=en which seems to be intended for moving apps to the ext SD card, but in this case I just want to create what I think is called a symlink. On a rooted device (the T705 is rooted) this app may work to re-map the above path to say /storage/extSdCard/DCIM/Camera Does anyone know how to do this? The developer is unresponsive. I believe some custom firmware has this feature built-in but I don't want to load CFW in this case. Many thanks for any pointers.