Can't connect to fastboot with adb

Cardinal_Vice

Member
Oct 4, 2020
6
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0
Hi,

I'm trying to boot a twrp image on my Motorola One Vision without flashing it or rooting the phone. Reason is I want to try it out and also tweek som files but not necessarily rooting it.

I've unlocked the boot loader and enabled developer options and set USB to debugging. When I connect the phone to the computer and use ./adb devices it is detected fine. When I disconnect, reboot and enable fastboot I get the fast boot menu with the options but when I connect it to the computer it will not detect the phone. ./adb devices give no output and ./fastboot boot /PATH/TO/IMAGE.FILE just gives the output "waiting for device". I've tried this from both my windows partition and Linux Debian with the same result. Cables are fine as I can use adb to pull files and such. It's basically in the fastboot menu that it doesn't seem to respond.

The phone is running Android 10 Kane 4.14. I've tried twrp 3.4 but I don't think the image is the issue since it won't respond to commands in fastboot.

Does anyone have any suggestions for troubleshooting this? Any and all help is appreciated.

Kind regards
Magnus

Ps: Posted this a few days ago in the general Q&A as a suspect it's not necessarily a specific One Vision problem but it didn't get any replies so I'll try here. Sorry if it's a bit of a double post. ds-
 

Cardinal_Vice

Member
Oct 4, 2020
6
0
0
I've made some headway and manage to reboot and connect but when I try to ./fastboot boot IMAGE I get the message Validation image failed.

If I understood it correct it's not possible to boot an image in this way which is of an earlier version than the one installed. Is this correct?

I''ve got 4.4 installed, and the image is 3.4.

/Magnus
 

ttomovcik

Member
Feb 26, 2015
15
10
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Považská Bystrica
I've made some headway and manage to reboot and connect but when I try to ./fastboot boot IMAGE I get the message Validation image failed.

If I understood it correct it's not possible to boot an image in this way which is of an earlier version than the one installed. Is this correct?

I''ve got 4.4 installed, and the image is 3.4.

/Magnus
Did you flash the patched vbmeta image?