I have Sofi SP8 programmer for serial flash memory, with ISP interface for In-System programming. I want try it to read/write memory chip WINBOND 25Q32BVSIG-1246 on board, without desoldering. Manual have notes about this, but it's not clear a few points: if use programmer to provide power supply for the chip (device is power off), how to connect WP and HOLD pins to VCC? ISP interface have VCC pin(#2) that need be connected to VCC pin of chip, so, additionally WP & HOLD pins on chip must be connected to ISP VCC pin too? Should I use some 1 to 3-pins male header adapter for this to split programmer VCC pin to 3 pins?
The other method is to use Power supply from target board (so device should be power on). Which way is preferable?
Here is ISP programming description from programmer Manual.