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For a custom device that doesn't have the traditional phone buttons and no screen, is there a way to determine the button sequence to enter bootloader? I've seen the article howtogeek.com/249439/how-to-enter-androids-bootloader-and-recovery-environments/ which lists different manufacturers however I'm curious if there is a definition in the firmware itself.

For a small detail there are references that Xiaomi was used as the base for this custom firmware however since it's not a Xiaomi phone I don't want to button mash combinations and brick the device.

phwd
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  • what device model? – alecxs Oct 29 '21 at 11:35
  • @alecxs I'm not sure how to find that as it has no screen. Is it defined in the config or any files in the firmware then I can look it up for you. I got "OPM1.171019.026" from the build.prop. – phwd Oct 29 '21 at 11:48
  • getprop ro.build.fingerprint – alecxs Oct 29 '21 at 13:00
  • @alecxs facebook/stella/stella:8.1.0/OPM1.171019.026 – phwd Oct 29 '21 at 19:45
  • Oh, facebook builds hardware? what is it, a watch, vr glasses, tv stick? so the model name is "facebook" and codename is "stella" - could not find anything useful – alecxs Oct 29 '21 at 22:31
  • A rayban glasses device. It's okay, you wouldn't find anything online about it. Thanks for the help. – phwd Oct 30 '21 at 01:13
  • It's probably of no use to enter bootloader as there is no usb to interact with. However universal method always is 'reboot bootloader' from adb or terminal. boot mode is determinated in bootloader aboot or lk little kernel (see comments here or this blog) – alecxs Oct 30 '21 at 11:01

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