UserAgent: Mozilla/5.0 (X11; CrOS aarch64 10895.5.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.14 Safari/537.36
Platform: 10895.5.0 (Official Build) dev-channel elm

Steps to reproduce the problem:
1. Attempt to upgrade to Canary
2. Update fails
3. 

What is the expected behavior?
Once put into Canary the device should update and a restart should bring up Canary

What went wrong?
The update to the OS completes according to the logs. The next step is to update the firmware. The firmware update fails which rolls back the OS update. The issue begins at line 576 
 * invoke: flashrom -p host -r _current/bios.bin
Firmware update available: Google_Elm.8438.140.0. 
 * invoke: flashrom -p host --fast-verify -w bios.bin -i RW_SECTION_B
Child process did not exit normally.
Failed to read VBNV from flash.
mosys invocation was: ["nvram", "vboot", "read"]
Application error: Subcommand execution finished with error -1
waitpid() or mosys error
Parameter fw_try_next is read-only
ERROR: cannot SET crossystem property: fw_try_next=B
ERROR: Execution failed: ./updater4.sh (error code = 1)
Finished after 7 seconds.
Failed Command: //usr/sbin/chromeos-firmwareupdate --mode=autoupdate - Exit Code 1
Firmware update failed (error code: 1).
Rolling back update due to failure installing required firmware.
Successfully updated GPT with all settings to rollback.
PostInstall Failed

Did this work before? Yes unknown

Chrome version: 69.0.3497.14  Channel: dev
OS Version: 10895.5.0
Flash Version: 30.0.0.142

I have made many attempts at working around this error.
 

Deleted: update_engine.20180812-101254 83.2 KB

update_engine.20180812-101254 83.2 KB Download