These chips are pre-programmed and cant be programmed, they work great on Corona boards but do not work on Trinity boards.
These chips are quite easy to install and the great thing is, no need to trim the wires !, leave them uncut and you will get great boot times.
A NAND flasher is required to flash Xell to your board and get the CPU Key.
Some other factors to consider, your working on a Corona board, is it a 16MB nand or 4GB nand ?, if it is a 4GB nand then the MTX SPI nand, JR programmer and NAND X flashers are no use to you, you will need to purchase an SD tool or 4GB nand re-write tool.
You may also need a postfix adaptor, a good indicator to needing one are resistors R2C6, R2C7 & R2C10 are missing, for a definitive answer, remove the heatsink and visually inspect to see if there are traces going to post.