Yes, but you'd need to remove the SetupWraith application, or block Google's OTA servers via your router's DNS, as it will forcibly OTA you to a newer build during setup.Ĭan I go back to stock after installing custom OS's?.If you manage to do this, re-running the exploit won't be possible either, as OTA's both relock the bootloader and set a burn-mode password. NO - It will relock your bootloader, and if you've made any modifications, brick you pretty hard.Nope, just like unlocking a Pixel device officially.
The exploit itself leaves no traces.ĭoes unlocking the bootloader break DRM in any way? Or just flash stock and lock your bootloader before RMA. FAQĭoes unlocking the bootloader void my warranty on this device? It's not possible to disable/change the password since it's burnt into the chip (efuses).
#Android u boot source Patch#
If you've powered it on and OTA'd, your firmware version needs to be below the February 2021 patch level. To discern this, look at the MFP date on the bar-code sticker on the bottom of your device's box.
#Android u boot source update#
For units manufactured before, the mitigation was enabled by software update in February 2021. fastboot & mke2fs installed from the SDK Platform toolsġ: The USB password mitigation has been enabled on units manufactured in December 2020 and after.A PC running some flavor of 64-bit GNU Linux.Chromecast With Google TV (sabrina) without USB password mitigation 1.You are solely responsible for any potential damage(s) caused to your device by this exploit. Security researchers Jan Altensen (Stricted) and Nolen Johnson (npjohnson) took the vulnerability and provided tools and customized a u-boot image to take advantage of the provided secure-execution environment to fully bootloader unlock the device. This uses a bootROM bug in the SoC by security researcher Frederic Basse (frederic).įrederic also did a great amount of work to temporarily boot a custom OS from USB here. Sabrina-unlock: Bootloader unlock for the Chromecast with Google TVĪn exploit chain intended to allow one to run a custom OS/unsigned code on the Chromecast with Google TV (CCwGTV).
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