Inky Frame with C++

Hi! I've recently received by Inky Frame 7.3 with a raspberry pi pico! Unfortunately, I have no experience with either Inky Frame or Raspberry Pi (any)! I want to program it in C++ I'm interested in having individual pixel control, ability to assign images to certain parts of the screen, and writing text with (hopefully custom) fonts! How could I start?

I've looked into this, but got timid when I saw mention of flashing the pi! https://learn.pimoroni.com/article/pico-development-using-wsl

I don't know what's involved - does my pico that came with my inky have a custom flash? Can I even get it back?

Oh and Python sidenote: I really really dislike using Python and hope to avoid it at any cost, but I did try Thonny for just a bit and had an odd issue that doesn't seem to be experienced by people: It keeps on spamming this:

python
!Wifi FAIL

SD: OK

!RTC: OK

!Wifi FAIL

SD: OK

!RTC: OK

over and over, and if I try to stop the program - it just tells me it's busy. The print times seem to sync up with the LEDs that one of which indicates WiFi, and the other... Not sure! Looks like a flag?

I managed to get it working through Tonny, unfortunately via Python. But... The screen doesn't update.

It seems that only the pins respond, not the display. :c

Fixed it! Needed DISPLAY_INKY_FRAME_7 instead of DISPLAY_INKY_FRAME_3!