Does there exist an installation method using a USB flash drive loaded with the Web Installer execution files, which is capable of installing GrapheneOS on supported smartphones? I'm trying to avoid needing to use a laptop and Internet browser to complete the installation.
USB Flash Drive GrapheneOS Installation
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Alphie You can do a offline installation via sideloading, you will still need another device. See installation instructions on the grapheneos homepage.
At present, the device needs to be tested by the Customize OS: By plugging in the "OTG USB 128G" OS You can the Bootloader UnLocking device to install Customize OS
Imagine: In the future, Android devices have no built -in operating system: By inserting "OTG USB 128G" installation, people can freely choose any OS distribution version, In the developer mode, users can set the Bootloader UnLocking password.
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My interpretation is that you are trying to identify ways of installing GrapheneOS that would minimize identifying information being sent by telemetry to Apple, Google, Microsoft.
(1) Use a router that supports installing a VPN configuration. Two excellent VPNs that support anonymous methods of purchase (cash sent through the mail or purchasing a voucher through amazon.com) are Mullvad and iVPN. After downloading the Wireguard configuration file to my phone, I changed the ".conf" extension to ".txt"; I then opened the file with a text editor (e.g., billthefarmer's Editor or Notes) and copied and pasted the content into my GL-iNet router.
(2) at a business with public wifi (such as a coffee cafe) activate the Pixel device and then use a laptop or another Pixel device with GrapheneOS installed on it to install GrapheneOS; that is what I did with an Apple laptop purchased at a b&m Apple store with cash and a Pixel phone purchased from Target with cash.
links:
https://www.gl-inet.com/solutions/vpn/
"GL.iNet routers support the following 30+ popular commercial OpenVPN and WireGuard VPN services. You can simply drag and drop your vpn files to activate the VPN function once you acquire the subscription of any of the below VPN service providers."
https://www.privacyguides.org/en/vpn/
https://www.ivpn.net/knowledgebase/billing/voucher-cards-faq/
https://mullvad.net/en/blog/2022/9/16/mullvads-physical-voucher-cards-are-now-available-in-11-countries-on-amazon