Reset Knox Warranty Void 0x1 Back To 0x0 |best| May 2026

I understand you're asking about resetting the Knox Warranty Void counter from 0x1 (tripped) back to 0x0 (intact) on a Samsung device.

To be direct and helpful: As of now, there is no known public or reliable method to reset the Knox Warranty Bit (0x1 → 0x0) on any Samsung device with an Exynos or Snapdragon processor released after approximately 2016.

Here’s why, and what you should know instead. reset knox warranty void 0x1 back to 0x0

3. Very Obscure Qualcomm Secure Boot Flaws

On a handful of Snapdragon 820/821 devices (S7/S7 Edge, Note 7), researchers found a vulnerability called "Aboot" (Android Bootloader) that allowed re-locking the bootloader after custom binary flash without tripping the Knox bit if done in a specific order before the first boot. This was patched by 2017. No modern Qualcomm or Exynos chip has this vulnerability.

1. Chip-Off + JTAG Manipulation

Technicians can physically remove the eMMC/UFS chip from the motherboard, mount it on a special reader, and try to manually edit the raw binary data. Older phones (Galaxy S4/S5) allowed this. Modern phones (S20+) have anti-replay protections and rolling code counters. If the counter doesn’t match the fused OTP (One-Time Programmable) memory, the phone hard-bricks. I understand you're asking about resetting the Knox

1. Factory Reset

A factory reset is a straightforward method to attempt to reset the Knox warranty status. However, this method may not always revert the status back to 0x0.

Can You Reset 0x1 to 0x0?

Short answer: On devices released after 2014 (Galaxy S6 and newer), no, you cannot reset it back to 0x0 through software. Steps:

Long answer: The Knox flag is stored in a one-time programmable (eFuse) area. It’s designed to be physically irreversible. However, there are a few scenarios and myths worth exploring.

⚠️ Reality Check: Can You Reset the Knox Warranty Void Flag (0x1 → 0x0)?

If you are reading this, you’ve probably just rooted your Samsung device, installed a custom ROM, or flashed a recovery image. You checked your download mode screen and saw the dreaded line: "Knox Warranty Void: 0x1".

Now you are looking for a way to set it back to 0x0. Here is the short answer and the technical explanation of why the guides you see on YouTube and XDA Forums are mostly outdated or dangerous.

The Consequences of 0x1

Once the flag is tripped (0x1), two main things happen:

  1. Warranty Void: Samsung service centers will detect the blown fuse and refuse hardware warranty repairs, even if the issue is unrelated to software.
  2. Knox Security Features Disabled: You lose access to Samsung Pay, Secure Folder, Samsung Health, and enterprise Knox features. These rely on a trusted environment that is compromised once the fuse is blown.