Remove the resistor 6.8k from memory and solder a normal 1/4 W 8.2k (10k might also work) to the circled pad. Leave the other lead of the 8.2k dangling near the ground. All you do is touch that lead to the ground or even clip it to ground for bootmode at start.
Excellent, thank you. I should have a 8.2k on hand, will solder that up in a few hours when I'm able to work on it. I'm assuming this is the method where you would remove that resistor, then short to ground on startup, but safer than without a resistor in place. In place of shorting pin 24 to ground, with or without a resistor?