[SM-T377A] Heimdall will not install lk2nd because Secure Download is enabled. Is there any workaround?

[TheoCGaming]

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I want to install PostmarketOS, but I can't install lk2nd on my tablet. Does anyone have a similar experience or a workaround or program?

Note: My main OS on my PC is Arch Linux with Flatpak, Pacman, and Git as package managers.

[TheoCGaming]

(although git isn't really a package manager)

[stephan-gh]

Are you sure that your tablet actually allows flashing custom software? This sounds a bit like a carrier-locked device that is bootloader-locked.

[wonderfulShrineMaidenOfParadise]

Not an MSM8916 variant as far as I know. Reference: https://desktop.firmware.mobi and search for gtes

[TheoCGaming]

carrier-locked device

It is carrier-locked, yes, but it's already been paid for and AT&T won't give the unlock code for such an outdated device anymore, even if only because the account it was on doesn't exist anymore.

[TheoCGaming]

I do wonder if there's a bypass for the unlock code... that is legal if you've already paid for the device right?

[wonderfulShrineMaidenOfParadise]

@TheoCGaming SM-T377A is not MSM8916, so msm8916-mainline/lk2nd doesn't support it, neither does msm8916-mainline/linux. Thus we cannot provide too much support for it. Good luck. https://wiki.postmarketos.org/wiki/Exynos_mainline_porting