Not sure why I’m being downvoted. If your only other option is desolder the NAND chips, you can build a cable for probably $10 in parts. Ask me how I know. That shit is easy. Get you a breakout board and find the connector or a close enough one that you can solder or crimp and get to it.
Way easier and less work than messing with the board level components, FFS people.
There are also people who will build you one as a service if it is beyond you.
Downvotes for adding to the discussion giving a real alternative to a stated problem is asinine.
Edit: also, if you’re willing to desolder the fucking NAND chips, just solder directly on the connector header on the PCB. Fucking duh!
According to the manual, you can do PC connection using Bluetooth, so give that a try. I found a teardown video and at least the top side of the PCB connector doesn’t have too many connection points. Some high quality pictures of both sides could help identify the likely pinout, and a breakout board would confirm. I would give Bluetooth a shot first.