Installing Arch on HP Chromebook 11 (hope not bricked)

[geoffslittle]

Disclaimer: This is a dup of a post I made on StackExchange in the case you'd rather answer there for the pointz.

I'm attempting to get into Arch Linux ARM by installing it onto an HP Chromebook 11. I was following this post but fell off the path when it came time to restart and boot from the USB. When I start up the Chromebook and hit ctrl-u, I see the following

$this->bbcode_second_pass_code('', 'Model: Google Spring
In: mkbp-keyb
Out: lcd
Err: lcd
energy_good: battery level 2% charge limit 2958 mA, keep charging...
Limited power mode set.
Net: No ethernet found.
Hit any key to stop autoboot: 0
(Re)start USB...
USB: Register 1313 NbrPorts 3
USB EHCI 1.00
delay for 250 msec
delay for 250 msec
3 USB Device(s) found
scanning bus for storage devices... Device NOT ready
Request Sense returned 06 3A 00
1 Storage Device(s) found
scanning bus for ethernet devices... 0 Ethernet Device(s) found
** Partition 12 not valid on device 0 **

** Unable to use usb 0:12 for fatload **
** Bad partition 3 **
Card did not respond to voltage select!
mmc_init err -17, time 11458
mmc1(part0) is current device
mmc_init err -19, time 3855
** Partition 12 not valid on device 1 **

** Unable to use mmc 1:12 for fatload **
** Bad partition 3 **
mmc_init err 0, time 41884
mmc0(part 0) is current device
mmc_init err 0, time 63481
ERROR: v7_dcache_inval_range - start address is not aligned - 0xbda39230
ERROR: v7_dcache_inval_range - stop address is not aligned - 0xbda39430
reading /u-boot/boot.scr.uimg
ERROR: v7_dcache_inval_range - start address is not aligned - 0xbda44948
ERROR: v7_dcache_inval_range - stop address is not aligned - 0xbda44b48
ERROR: v7_dcache_inval_range - start address is not aligned - 0xbda38838
ERROR: v7_dcache_inval_range - stop address is not aligned - 0xbda38a38

110 bytes read
## Executing script at 42000000
Wrong image format for "source" command
Loading file "/boot/vmlinux.uimg" from mmc device 0:3 (ROOT-A)
** File not found /boot/vmlinux.uimg
SMDK5250 #')

And I have a prompt to a very limited shell. Have I completely bricked my compy? How do I fix this? Let me know if I should provide any other diagnostic information. I've run the help command that gives a partial list of additional available commands, two of which are usb and usbboot that seemed promising but both ended up being a dead-end.

Thanks for any help.

[WarheadsSE]

$this->bbcode_second_pass_code('', 'Device NOT ready')

Try a different USB stick, or a cold boot with that stick in place.