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I wish to use a boot loader (U-Boot for instance), and an ftp connection (via Ethernet) to load the kernel and the file system, and flash them.

I have done this procedure in the past on other boards, using minicom via a serial connection, u-boot boot loader, and a tftp server, but those only required some sort of interrupt during start up (on-board button, keyboard press sent via uart, etc...) in order to access their boot command line.

So I wonder if it is possible to do something similar on the pi, and if so, how?

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    I don't think you will be able to replace the pi's (proprietary?) bootloader with U-boot or anything else, but it does look like you can get it to load U-boot instead of a kernel, and go from there. – goldilocks Jun 19 '15 at 13:18
  • There is no flashable memory in the Pi. All you can do is update the SD card memory with a kernel and filesystem. Not sure if that would work either as you won't have access to the SD card during boot. – joan Jun 19 '15 at 14:16
  • Did you succeed Edwin ? I'd like to do the same. – Brooze Aug 28 '15 at 13:58

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