No. The update is hardware-dependent, not region-dependent. Changing your region in VPN or OPPO ID will not unlock a non-existent update.
, the device lacks the hardware headroom required to run the more resource-intensive features of ColorOS 12, such as the Quantum Animation Engine 3.0 and advanced privacy dashboards, without significant performance degradation. Options for Users oppo a9 2020 coloros 12 update
Some advanced users may ask: Can I install ColorOS 12 unofficially? No. The update is hardware-dependent
Even if ported, the experience would include: the experience would include: