I did the above but it still boots into stock recovery.
The rkflashtool command said done without any errors but it looks like it never flashed the image.
In the zip file there is an executable androidtool.exe and driverinstall,
Brief instructions:
- Unzip twrp-2.8.5.0-X5.zip, install drivers (run DriverInstall.exe);
- Power off the X5, connect it to the computer via USB while holding the Previous track button.
- Start AndroidTool.exe, make sure that only checkbox #2 is checked and LOADER device is found;
(for flashing stock recovery just untick #2 checkbox and choose #3 - recovery_stock.img).
- Press <Run> button, wait till flash operation is completed;
- Go to Advanced function tab and click <ResetDevice> button.
- We're done.
To enter custom recovery:
- Power off the X5;
- Push Previous track button, Play/Pause Button and Power button simultaneously.
- Wait 5 sec, release Power button;
- Wait till logo appears and then release all buttons.
This is how i put twrp on my fiio x5iii.
If you have the SU file put on the root directory or sdcard, and install through twrp.
See if this gets you there.