I looked at one of my DL4100 boards (4060-705194-000) and I can establish the offset needed, but looking at this under x-ray, this looks to be a 10 layer board and aside from the expected power and gnd planes, there are also traces passing directly under the place where you need to drill. This is for LPC_CLK_0. There is also an LPC_CLK_1. I don’t know if that one is needed to be pulled up too. I doubt it considering it wasn’t needed for the similar Synology NAS fix.
So, for this board, there isn’t any way that I can see to connect a pull-up resistor to LPC_CLK_0 short of desoldering the CPU itself and somehow connecting a rework wire to the pad on the board and then re-installing the CPU.
