Today I was able to install one of the images that I built on Day 6. To do this I had to modify the scripts from the pre-built image that I downloaded. Here's the steps I followed:
1. make a new directory 'mybuild' and copy over the files demo_linux_nandflash.bat, demo_script_linux_nandflash.tcl, and demo_linux_nandflash.tcl from the pre-built image directory
2. copy the files zImage-at91-sama5d4_xplained.dtb, zImage-at91-sama5d4_xplained_hdmi.dtb, and zImage-at91-sama5d4_xplained_pda4.dtb from the build-atmel/tmp/deploy/images/sama5d4-xplained directory to the mybuild directory
3. rename the files from step 2 to remove the "zImage-" prefix from the file names
4. copy the file atmel-qt5-demo-image-sama5d4-xplained.ubi from the build-atmel/tmp/deploy/images/sama5d4-xplained directory to the mybuild directory
5. copy the files zImage-sama5d4-xplained.bin, u-boot.bin, sama5d4_xplained-nandflashboot-uboot-3.7+gitAUTOINC+e977bb2ad0.bin, and at91bootstrap-sama5d4_xplained.bin from the build-atmel/tmp/deploy/images/sama5d4-xplained directory to the mybuild directory
6. rename sama5d4_xplained-nandflashboot-uboot-3.7+gitAUTOINC+e977bb2ad0.bin to sama5d4_xplained-nandflashboot-uboot-3.7.bin
7. edit the demo_linux_nandflash.tcl script as follows:
## Files to load
set bootstrapFile "sama5d4_xplained-nandflashboot-uboot-3.7.bin"
set ubootFile "u-boot.bin"
set kernelFile "zImage-sama5d4-xplained.bin"
set rootfsFile "atmel-qt5-demo-image-sama5d4-xplained.ubi"
## board variant
set boardFamily "at91-sama5d4"
set board_suffix "_xplained"
## dtb option
set use_dtb "yes"
## uboot env option
set build_uboot_env "yes"
## now call common script
source demo_script_linux_nandflash.tcl
8. finally run the batch file 'demo_linux_nandflash.bat'