All Nexus / Programmer: Is it possible to program a dual boot image, then a user-data image?

All Nexus / Programmer: Is it possible to program a dual boot image, then a user-data image?

Yes, it is possible. Assuming that the user have already programmed the dual boot image, they can still program a user data image using the programmer. The EPV operation (erase, program, and verify) allows the user to select a start address for the operation. The end address would be automatically calculated depending on the user data size. 

Only the addresses from the start address to the end address would be affected by the EPV operation. So in this case, user have to choose the address limits that does not affect the primary bitstream, golden bitstreams, and the jump instruction at the end of the Flash.