Fastboot is a protocol that can be used to re-flash partitions (xboot.img, u-boot.img, uImage and rootfs.img) on SP7350. “Minimal ADB and Fastboot” is a small application for Windows Computer that allows you to do the fastboot. So far only eMMC device supports fastboot on SP7350.
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Fastboot over USB
eMMC boot
After booting from eMMC device to U-Boot, you can apply the following commands on SP7350 and connect it to Winodws Computer through an USB 2.0 cable (micro USB) or an USB 3.0 one (type C) to let SP7350 serve as an USB download gadget.
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=> fastboot usb 0 |
Update USB download gadget driver in the Windows Computer
After applying the command in U-Boot and connecting SP7350 to the Windows Computer, you will note that in Device manager the USB appears as : Other devices->USB download gadget in Windows Computer. Right click it, and choose “Update drivers->browse my computer for driver software ->let me pick from a list of available drivers on my computer”.
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C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash uboot2 u-boot.img target reported max download size of 117440512 bytes sending 'mmc0boot0' (837KB)... OKAY [ 0.033s] writing 'mmc0boot0'... OKAY [ 0.031s] finished. total time: 0.064s C:\Program Files (x86)\Minimal ADB and Fastboot> |
Fastboot over UDP
Enable
Select “Enable fastboot protocol over UDP” in > Device Drivers > Fastboot support of U-Boot menuconfig as shown below.
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