OMAP L137 Gel files

Hi,

I have a custom board designed with OMAP L137  High Temp Chip, and I need a Gel file specific to OMAP 137 so I can modify it to change the boot mode when I use the JTAG xds200 to boot in NOR Flash boot.

if  you can walk me through of how to change the Gel file I will be very thankful.

Thanks much

Ahmed