ADB Sideload Failed to Find Update Binary Status 2 [Fixed]

In this guide, we will show you he steps to fix the “Failed to Find Update Binary” accompanied by the Status 2 error code when trying to install a custom ROM via ADB Sideload. Recently, I was trying to flash a custom ROM on one of my devices. The said ROM does have its own recovery, so we had to use it for installation purpose instead of flashing the TWRP Recovery. So I flashed that AOSP Recovery and then proceeded to sideload the ROM file. But as soon as I did that, I was greeted with the following error message:

ERROR: Recovery Failed to Find Update Binary META-INF com/google/android/update-binary Installation Completed with Status 2 Installation Aborted

ADB Sideload Failed to Find Update Binary Status 2 - 1

I know the developer pretty well, and there was no way he could have forgotten to add the update-binary script in the ROM. Still, I extracted the ROM ZIP to double-check it, and this is when I got my hands on Pandora’s box. Not only did I find the file, but more importantly, I got hold of the fix as well! So without any further ado, let’s check out that fix right away.

Fix Failed to Find Update Binary: Status 2

ADB Sideload Failed to Find Update Binary Status 2 - 2

The single biggest reason [and in most cases, the sole reason] behind this problem is an issue with the ZIP file. The following are the plausible causes that could lead to this issue, along with their associated fixes:

It might be the case that the ZIP file hasn’t been downloaded completely/correctly. So please download it once again. Try using a different browser this time around.

In some cases, the ZIP file has been downloaded correctly, but the ZIP might have a couple of additional files, apart from the ROM! Yes, this might sound weird, but this is what happened to me. Actually, the developer had also added the keybox.xml file along with the ROM so that users can easily pass the Strong Test after flashing the ROM.

However, there was no information about the ROM ZIP having a keynox file. So we all thought that it was a standalone ZIP file with just the ROM file and then proceeded to sideload it. This is when I was greeted with the aforementioned error. Then I decided to have a look at the ZIP to verify if it has the update-binary script or not. But as soon as I extracted, I got to know the complete picture. So I deleted the keybox file and then did the sideload once again- this time there were no issues whatsoever!

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