Yesterday, 04:11 PM
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#1 |
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Junior Member
 Posts: 1
Karma: 10
Join Date: Nov 2025
Device: BOOX Note Air 3
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Downgrade Note Air 3 Firmware
Hi everyone! In the midst of trying to root my (US) BOOX Note Air 3, I upgraded without thinking from 3.5.4 to 4.1 via the `update.upx` from data.onyx-international.cn (rather than data.boox.com).
I would really like to downgrade to 3.5.4 but I am blocked from the normal System Update and `adb sideload` methods by an anti-rollback mechanism. How can I force a downgrade? If necessary, I am prepared to lose all the data on my device. Thanks for your help! Let me know if you want other information from me such as `edl` information. |
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Today, 05:24 AM
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#2 |
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Onyx-maniac
 Posts: 4,132
Karma: 18764971
Join Date: Feb 2012
Device: Nook NST, Glow2, 3, 4, '21, Kobo Aura2, Poke3, Poke5, Go6
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A custom recovery will bypass the anti-rollback.
Personally, I think rollbacks are a dead-end, but whatever. |
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