Undetectable 2.52.0, with the Chromium 155 engine, was released on October 13, 2026. Undetectable ran on Chromium 153 in the previous release, 2.51.0, dated September 15, and the changelog has no version 154. Profiles created earlier can be moved to the new browser version using the “Update browser” option in the profile manager, the developers noted in their blog.
A run in the background option has been added to the profile launch mode selector. The company explains why it’s useful: when a script opens and closes profiles one by one, each new browser window pops up in front of your work. With the new mode, profiles open in the background, so you can keep working on your computer while automation runs.
The profile manager now has a “Clear tags” button. You could already assign tags to multiple profiles at once, but you couldn’t remove them in bulk. The changelog lists this as a fix for the tag assignment feature.
Four more patches were released on October 15, from 2.52.1 to 2.52.4:
- fixed a DPR issue in the Windows and macOS versions;
- fixed the mobile viewport;
- fixed template-based name generation when creating profiles in bulk;
- improved performance on macOS.
What to do: Update directly to 2.52.4 instead of stopping at 2.52.0—the DPR and mobile viewport fixes only came in later patches.
