Three days after the last iOS 12 beta for developers, Apple has released an updated build. iOS 12 developer beta 10(public beta 8) is now available on 3uTools. It seems we are closer to the final release.

Apple has made iOS 12 more useful for owners of older iPhones and iPads, with performance improvements aimed at improving the experience for those devices along with newer models.

Here's how you can download iOS 12 beta 10 on 3uTools. To escape the risk of data loss, please back up your iDevice using 3uTools.

Operations

Step 1 Launch 3uTools, and connect iDevice to 3uTools with USB cable. 

Step 2 Head to Flash & JB → Easy Flash, select the firmware iOS12.0beta10. You can save your original data by clicking checkbox "Retain User's Data While Flashing".

Step 3 Wait patiently this this process is finished. Generally, the flashing process would take 5 to 10 minutes. Your device will be updated to iOS 12 beta 10 after reboot.

If you meet any flashing error, you could view tutorial Roundup: Error Codes in iTunes/3uTools for reference. In exceptional cases, you could contact 3u Team for further support.