Troubles with SPI flash on rock pi 4b+

I have flashed balenaOS to a rock pi 4b+, so every time it boots with sd card it goes right to balena. I’m trying to install a new image on the emmc and have connectivity, but run into the following errors:

noah@hq:~/Downloads$ sudo rkdeveloptool db /home/noah/Downloads/rk3399_loader_spinor_v1.15.114.bin
Opening loader failed, exiting download boot

Maskrom mode is clearly enabled:

noah@hq:~/Downloads$ sudo rkdeveloptool ld
DevNo=1 Vid=0x2207,Pid=0x330c,LocationID=107 Maskrom

USB-A to USB-A in the USB OTG port (top USB-C port) is connected.

rkdeveloptool was installed with snap on Ubuntu 22.04.

Any clues?