This article is for educational purposes. The author and platform are not responsible for bricked devices, lost IMEIs, or data loss. Always research your specific Vivo 1801 sub-model (check Settings > About Phone > Software Version ) before proceeding.

Because these are generic builds not tailored to the Vivo 1801, expect the following problems:

However, fast forward to today, and the story changes. These devices run on the chipset and shipped with Funtouch OS 4.0 (based on Android 8.1 Oreo). While some received updates to Funtouch OS 9 (Android 9 Pie), Vivo abandoned software support shortly after.