Surfans F20 Installation Issues

[September1752]

Hello,

I would like some help with installing Rockbox via the Utility onto a Surfans F20 please.
I'm having trouble following others messages ([1] and [2]) in this forum so will list below the steps I have taken which I think should work, however when I click the Install button, the Utililty closes itself after I select the upt file.

Check SD Card is Fat32
Download RockboxUtility
download f20.v27-patched.upt file from https://download.rockbox.org/bootloader/surfans/
rename it to update.upt
copy to root of SD card
Run Rockbox Utility
Save Backup
Select Surfans F20 and drive
Click Install
Select update.upt


I also downloaded latest Zip from: https://download.rockbox.org/daily/aigoerosq/ and extracted to SD card which didn't seem to help.

Am I using the wrong file?

Thank you,

[1] https://forums.rockbox.org/index.php/topic,54277.0.html
[2] https://forums.rockbox.org/index.php/topic,54280.0.html