Operating system image installation methods

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We use a few different methods to install operating system images.

installation method what files are required how to install
XO-1 signed

XO-1 Signed Clean Install Procedure

.img and fs.zip hold down the four game pad buttons
XO-1 unsigned

XO-1 Unsigned Development Build Install Procedure

.img and .crc obtain developer key, disable-security, interrupt boot, then use the copy-nand command
XO-1 partitioned .dat and .img obtain developer key, disable-security, interrupt boot, then use the update-nand command
XO-1.5 signed .zd and fs.zip hold down the four game pad buttons
XO-1.5 unsigned .zd alone check if security is disabled, if so obtain developer key and disable-security, interrupt boot, then use the fs-update command

Note that signed methods are the same for XO-1 and XO-1.5. Intentional design, since we do not wish to increase the training burden for the deployment teams.