Mtk-su Failed Critical Init Step 3 Jun 2026
Elias stared. He blinked. He read the line again.
: Verify your device is still vulnerable. If you recently updated your firmware, the "Step 3" failure may be a sign that the exploit is no longer compatible with your current security patch. about.gitlab.com mtk-su failed critical init step 3
to an older version (if the bootloader allows it) to use this specific tool. Check mtk-su Version : Ensure you are using the latest version of from the official XDA Developers thread . Older versions may fail on newer security patches. Alternative Methods fails, you might need to use more advanced tools like Elias stared
Is this only for upgrades or can happen also for monthly security patches?
I have this error too
This applies to all UUP updates, including the monthly cumulative updates.
I have this problem too and with your great article, I could solve this problem.
Thank you very much for this :).
I have only one problem. Normally, in the WsusContent folder, only the metadata of the updates is saved when using SCCM. But since I activated the Automatic Approvment in WSUS, the size of WsusContent folder is increasing continuosly, because I activated also for montly updates, because I also had the problems with them.
Do you have an idea, how I can get it running without having a very big WsusContent folder ?
Or do I have to increase the WsusContent folder and save all updates two times (SCCMContentLib and WsusContent folder) ?
Yes, that’s a good point. You have two options: either you occasionally run the “Server Cleanup Wizard” in WSUS manually, or you automate it using a scheduled task with a script.
Okay, but as long as the updates are approved and deployed in SCCM, I should not clean up these updates, or will the updates continue to work when they have been approved in WSUS once?
Did you get my second question ? I mistakenly posted it as a new comment rather than a reply…
>>> Okay, but as long as the updates are approved and deployed in SCCM, I should not clean up these updates, or will the updates continue to work when they have been approved in WSUS once?