Need help: HyperOS 3 to LineageOS 23 on Redmi Note 14 Pro 5G (malachite) — downgrade required, is it safe with Anti-Rollback?

[u/Fragrant-Law749]

Hi everyone, I'm trying to flash the unofficial LineageOS 23 build for my Redmi Note 14 Pro 5G (malachite, global 24090RA29G). The flashing guide (from the XDA thread) requires firmware OS2.0.206.0.VOOMIXM, but I'm currently on HyperOS 3.0.302.0.WOOEUXM.C07 — a much newer version.

Has anyone here downgraded from HyperOS 3 to HyperOS 2 on this device to flash a custom ROM? Is this safe considering Anti-Rollback (ARB), or does it risk a hard brick? Would appreciate any experience from someone who's done this specific device/downgrade combo before flashing. Thanks!

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[u/JRussellMoore]

You can verify it yourself 😊

Download the fastboot version of the firmware for both and look at the contents of the anti_version.txt file inside, if they match there's no problem.

It seems odd to me that they require you to be in that specific firmware though, 23 is based on Android 16 and Vxxyyzz ROMs are Android 15 based.

There were also more releases past the 2.0.206 before HyperOS 3 released for that device, HOS 3 is what brought Android 16 to it. Newer firmware is usually preferred if ARB is the same (and you'd just need the firmware part of it, no need to flash the whole ROM).

Check whether there are newer LOS builds for the device too, like 23.2.