Download the latest Realme 3 RMX1821 firmware (Stock ROM) to fix bootloop and unbrick your device. This file contains the Flash Tool, USB Driver, and visual instructions. File Size: 5 GB.
Get Realme 3 RMX1821 Stock Firmware
📂 Realme 3 RMX1821 Firmware Specifications
| Package Name | Realme_3_RMX1821_EX_11_A.13_190319(Flash-Files.Net).zip |
| Model Number | Realme 3 RMX1821 |
| Install Method | Guide How to Flash Firmware |
| File Size | 5 GB |
| Flash Tool | Realme Flash Tool for Windows OS How to Flash firmware: Guide How to Flash Firmware Download File Server (1) Download File Server 2 (Paid) Firmware File Name: Realme_3_RMX1821_EX_11_A.16_190516(Flash-Files.Net).zipFirmware File Size: 5 GB Download Flash Tool: Realme Flash Tool for Windows OS How to Flash firmware: Guide How to Flash Firmware Firmware File Name: Realme_3_RMX1821_EX_11_A.18_190629(Flash-Files.Net).zip Firmware File Size: 5 GB Download Flash Tool: Realme Flash Tool for Windows OS How to Flash firmware: Guide How to Flash Firmware Firmware File Name: Realme_3_RMX1821_EX_11_A.24_191109(Flash-Files.Net).zip Firmware File Size: 5 GB Download Flash Tool: Realme Flash Tool for Windows OS How to Flash firmware: Guide How to Flash Firmware Firmware File Name: Realme_3_RMX1821_MT6771_EX_11_A.23_190916(Flash-Files.Net).zip Firmware File Size: 4.84 GB Download Flash Tool: SP Flash Tool for Windows OS | SP Flash Tool for Linux OS |
| Download |
📂 Firmware Specifications
| Package Name | Realme_3_RMX1821_EX_11_A.16_190516(Flash-Files.Net).zip |
| Flash Method | Guide How to Flash Firmware |
| Size | 5 GB |
| Flash Tool | Realme Flash Tool for Windows OS How to Flash firmware: Guide How to Flash Firmware Firmware File Name: Realme_3_RMX1821_EX_11_C.16_200921_OTA(Flash-Files.Net).zip Firmware File Size: 5 GB Download Flash Tool: Copy the update.zip file to the phone SD and flash it through the stock recovery mode. Firmware File Name: Realme_3_RMX1821_EX_11_C.17_201117_RFT(Flash-Files.Net).zip Firmware File Size: 5 GB Download Flash Tool: Realme Flash Tool for Windows OS How to Flash firmware: Guide How to Flash Firmware Firmware File Name: Realme_3_RMX1821_EX_11_C.19_210117_RFT(Flash-Files.Net).zip Firmware File Size: 5 GB Download Flash Tool: Realme Flash Tool for Windows OS How to Flash firmware: Guide How to Flash Firmware Firmware File Name: Realme_3_RMX1821_MT6771_EX_11_C.19_210117(Flash-Files.Net).zip Firmware File Size: 5.25 GB Download Flash Tool: SP Flash Tool for Windows OS | SP Flash Tool for Linux OS |
| Download |
📂 Firmware Specifications
| File Name | Realme_3_RMX1821_EX_11_A.18_190629(Flash-Files.Net).zip |
| Flash Method | Guide How to Flash Firmware |
| Size | 5 GB |
| Tool | |
| Download |
📂 Firmware Specifications
| File Name | Realme_3_RMX1821_EX_11_A.24_191109(Flash-Files.Net).zip |
| Flash Method | Guide How to Flash Firmware |
| Size | 5 GB |
| Flash Tool | |
| Mirrors |
📂 Firmware Specifications
| Package Name | Realme_3_RMX1821_MT6771_EX_11_A.23_190916(Flash-Files.Net).zip |
| Flash Method | Guide How to Flash Firmware |
| File Size | 4.84 GB |
| Flash Tool | |
| Mirrors |
📂 ROM Details
| File Name | Realme_3_RMX1821_EX_11_C.10_200510_RFT(Flash-Files.Net).zip |
| Install Method | Guide How to Flash Firmware |
| File Size | 5 GB |
| Mirrors |
📂 Firmware Specifications
| File Name | Realme_3_RMX1821_EX_11_C.16_200921_OTA(Flash-Files.Net).zip |
| Size | 5 GB |
| Mirrors |
📂 Firmware Specifications
| Package Name | Realme_3_RMX1821_EX_11_C.17_201117_RFT(Flash-Files.Net).zip |
| Flash Method | Guide How to Flash Firmware |
| File Size | 5 GB |
| Mirrors |
📂 ROM Details
| File Name | Realme_3_RMX1821_EX_11_C.19_210117_RFT(Flash-Files.Net).zip |
| Flash Method | Guide How to Flash Firmware |
| File Size | 5 GB |
| Mirrors |
📂 ROM Details
| File Name | Realme_3_RMX1821_MT6771_EX_11_C.19_210117(Flash-Files.Net).zip |
| Flash Method | Guide How to Flash Firmware |
| File Size | 5.25 GB |
| Download |
📂 ROM Details
| File Name | Realme_3_RMX1821_EX_11_C.20_210304_RFT(Flash-Files.Net).zip |
| Install Method | Guide How to Flash Firmware |
| Size | 5.44 GB |
| Download |
📂 Firmware Specifications
| Package Name | Realme_3_RMX1821_EX_11_OTA_C.20_All_OTA(Flash-Files.Net).zip |
| File Size | 2.63 GB |
| Mirrors |
📂 ROM Details
| Package Name | Realme_3_RMX1821_EX_11_C.21_210521_RFT(Flash-Files.Net).zip |
| Install Method | Guide How to Flash Firmware |
| Size | 5.44 GB |
| Download |
📂 ROM Details
| File Name | Realme_3_RMX1821_EX_11_C.22_210727(Flash-Files.Net).zip |
| Flash Method | Guide How to Flash Firmware |
| Size | 5.45 GB |
| Download |
🛠️ Essential Tools
How to Flash: Realme 3 RMX1821
Use this guide to install the firmware on your Realme 3 RMX1821 correctly. Ensure your battery is charged.
Phase 1: Setup
Download the firmware and unzip it on your PC. Verify that you have the Flash Tool and USB Drivers inside the folder.
Phase 2: Drivers
Setup the provided USB Drivers so your computer detects the Realme 3 RMX1821.
Step 3: Flash
Launch the Flash Tool, load the firmware file, and connect your device as instructed. Click "Start" to commence flashing.
Frequently Asked Questions
Is this Realme 3 RMX1821 firmware official?
Yes, the firmware provided here is 100% official from the manufacturer for Realme 3 RMX1821.
Does flashing Realme 3 RMX1821 delete data?
Yes, flashing Realme 3 RMX1821 stock firmware typically wipes user data. Please backup your data before proceeding.
What is the Realme 3 RMX1821 file size?
The Realme 3 RMX1821 firmware file size is 5 GB. Make sure you have enough storage space.
Are the download links safe?
Yes, all download links provided are 100% safe and scanned for malware. We provide direct links to official firmware files.
If you encounter any problem installing Realme 3 RMX1821, kindly comment down below.
