1 CS# C2
2 SIO1 D2
3 SIO2 C4
4 GND B3
5 SIO0 D3
6 SCLK B2
7 SIO3 D4
8 VCC B4

Rest is NC floating.

Edit:
I now realize VCCQ and VSSQ probably need connected too.....Weird that reading works with missing IO supply.

Edit 2:
Yup that fixed it, was me being stupid

Trying to write to a MX25UM25645G octaflash chip. Chip ID reads correct and I can blank verify a new device and read/verify a device that has some unknown contents. When I try to erase/write the chip I get a "device not found" "communication error". I'm using a universal BGA24 to...