You can download the full A.39 firmware package for Realme C21 (RMX3201) handsets in Thailand using the direct link provided below. This update is based on Realme UI 1.0. The ROM provided here is official and has not been modified in any way.
Firmware Details
| Device Name | Model | Firmware | Android | Realme UI | Version Number | Security Patch | Region | Release Status | Date (DD/MM/YY) | Size | Download |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Realme C21 | RMX3201 | A.39 | 10 | Realme UI 1.0 | RMX3201_11_A.39 | June 1, 2021 | Thailand | Stable | 28/06/2021 | ~3.5 GB |