Can you connect a serial cable to the board? You need a TTL serial and it connects like this:
http://workshop.raspberrypiaustralia.com/usb/ttl/connecting/2014/08/31/01 -connecting-to-raspberry-pi-via-usb/ then on you pc: screen /dev/ttyUSB0 115200 then plug the power in the board, and you should see the bootloader: U-Boot 2015.07 (Aug 31 2015 - 15:50:21 +0200) DRAM: 944 MiB WARNING: Caches not enabled RPI 2 Model B MMC: bcm2835_sdhci: 0 reading uboot.env In: serial Out: lcd Err: lcd Net: Net Initialization Skipped No ethernet found. Hit any key to stop autoboot: 0 ubuntu@raspi2:~$ uname -a Linux raspi2 4.4.0-1029-raspi2 #36-Ubuntu SMP Wed Oct 19 14:38:48 UTC 2016 armv7l armv7l armv7l GNU/Linux ubuntu@raspi2:~$ ls -la /boot/firmware/*.dtb -rwxr-xr-x 1 root root 13430 Oct 26 15:18 /boot/firmware/bcm2709-rpi-2-b.dtb this on -1029.36, while if i update to -1030.37 the new dtb is bigger and it blows the space at the beginning of the memory: ubuntu@raspi2:~$ ls -la /boot/firmware/*.dtb -rwxr-xr-x 1 root root 15356 Oct 26 18:18 /boot/firmware/bcm2709-rpi-2-b.dtb and i bet on console you will end up with something like this: U-Boot 2015.07 (Aug 31 2015 - 15:50:21 +0200) DRAM: 944 MiB WARNING: Caches not enabled RPI 2 Model B MMC: bcm2835_sdhci: 0 reading uboot.env In: serial Out: lcd Err: lcd Net: Net Initialization Skipped No ethernet found. Hit any key to stop autoboot: 0 libfdt fdt_check_header(): FDT_ERR_BADMAGIC No FDT memory address configured. Please configure the FDT address via "fdt addr <address>" command. Aborting! 6682376 bytes read in 12755 ms (510.7 KiB/s) Kernel image @ 0x1000000 [ 0x000000 - 0x65f708 ] ERROR: Did not find a cmdline Flattened Device Tree Could not find a valid device tree U-Boot> is that the case? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1636838 Title: Failed to boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1636838/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
