Some MP recovery images are not accepted |
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Issue descriptionI'm able to use some MP recovery images for some board but not the others. For example, I tried several version of cyan's, but none of them work for recovery. Here is an example. https://storage.cloud.google.com/chromeos-releases/canary-channel/cyan/8705.0.0/chromeos_8705.0.0_cyan_recovery_canary-channel_mp.bin But it works for veyron_minnie on 8718.0.0 and 8709.0.0, but NOT 8710.0.0. 8710 was when some signing change started to be effective. Note the MP image of cyan didn't work for me all the time.
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Aug 18 2016
please clarify "does not work" or "is not accepted". show the exact commands you're using, and then the exacts things you did after that (e.g. usb stick/recovery method/etc...).
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Aug 18 2016
1. dd into USB stick. $ sudo dd if=canary-channel%2Fcyan%2F8705.0.0%2Fchromeos_8705.0.0_cyan_recovery_canary-channel_mp.bin of=/dev/sdd bs=4M oflag=sync 2. Power up Chromebook and hit ESC-Refresh-Power to enter recovery screen. 3. Insert USB stick. Expected: see progress bar of recovery. Actual: "The device you inserted does not contain Chrome OS."
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Aug 18 2016
can you verify what keys your cyan is using now ? i assume that info will be available if you hit tab at the recovery screen. i have a minnie & samus myself, but that's it.
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Aug 18 2016
gbb.rootkey: feb7dd4fc..... gbb.recovery_key: 6a0de832ff.....
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Aug 18 2016
Is the WP screw in your unit? If not you can flip it to dev mode, then enable cryssystem dev_boot_usb=1, then ctrl+u boot that recovery image and it should rewrite your firmware to the matching keys in the recovery image.
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Aug 19 2016
Is there an easy way (e.g. command line) to tell if hardware WP is on or off? We have at least two instances here with the same problem.
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Aug 19 2016
Yea, try `crossystem | grep wp`, that should give you the different values (sw, boot, current).
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Aug 19 2016
I didn't flip WP but the problem now is only reproducible on 8710, but not 8705 and 8718. The Android signing change was enabled from 8710 to 8717(?), but I have no idea why it would affect the recovery, since the Android image should just be a file inside CrOS image. Mike, are you able to flash with your manually signed image?
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Aug 22 2016
Everything seems to work now. Closing... |
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Comment 1 by victorhsieh@chromium.org
, Aug 18 2016