Download Realme 12 5G RMX3999 Flash File Firmware from Ms mobile. With this file you can unlock device Screen lock Pattern, FRP and can upgrade or downgrade the device. Always use latest flash file to flash Realme 12 5G check device version by dial code *#899# in emergency dial. download the file with direct download link given below and read all flashing instructions before flashing the phone.
Download Realme 12 5G RMX3999 Flash File Firmware:
- RMX3999GDPR_11_15.0.0.810EX01_2025032410030000
- Phone Name = Realme 12 5G
Project No = 23701
RMX3999export_11_15.0.0.810EX01_2025032410020152
Phone Name = Realme 12 5G
Project No = 23701
- RMX3999export_11_15.0.0.900EX01_2025051402360250
- RMX3999export_11_14.0.1.513%28EX01%29_2024090518580000
- RMX3999export_11_14.0.1.512EX01_2024082121360102
- RMX3999export_11_14.0.1.509EX01_2024061700080000
- RMX3999export_11_14.0.1.507EX01_2024050822150000
- RMX3999export_11_14.0.1.506%28EX01%29_2024041320100107
- RMX3999export_11_14.0.1.505EX01_2024033000310000
- RMX3999export_11_14.0.1.501EX01_2024022813340124
- Realme 12 5G Driver
Here are the official and widely used firmware (flash file) options for the Realme 12 5G (RMX3999):
📦 Available Stock ROMs (Flash Files)
Global Android 14 / Realme UI 5.0 (EDL mode)
- RMX3999export_11_14.0.1.513(EX01) – released 09‑05‑2024, 6.1 GB
- …509(EX01) – 17‑06‑2024 (~6.7 GB)
- …507, …506, …505, …501 – earlier updates from February–May 2024
OTA to Android 15 / Realme UI 6.0
- 11_15.0.0.610(EX01) – 06‑02‑2025 (~6.75 GB), one of the latest official updates
🔧 What’s Included In Each ZIP
- Stock firmware file (~6–6.9 GB)
- USB/MTK drivers
- Flash tool options: SP Flash Tool, OplusFlashTool
- Flashing guide or tutorial (step-by-step)
🚀 How to Flash the Device
- Choose and download the desired firmware ZIP.
- Extract its contents.
- Install the USB driver included.
- Open the appropriate Flash Tool:
- For MTK chipset → SP Flash Tool
- For Realme-specific EDL → OplusFlashTool (login required)
- In the tool, load the firmware scatter/script file and press “Download” or “Start All”.
- Power off your phone, then hold Vol Up + Vol Down and connect it to PC.
- Wait for the flashing process to complete, then disconnect and restart.
🧰 Unlocking Bootloader & Tool Access
- Realme devices now often require authorized login to their OplusFlashTool.
- According to users on r/Realme, unlocking the bootloader (via DeepTest app) is currently not supported on the Realme 12 5G
- Bottom line: Many users report Realme has locked the fastboot/bootloader path for new models. EDL flash-only mode is the viable route now.
✅ Recommended Steps
- Pick the firmware version you need (e.g., 15.0.0.610 for latest).
- Download from a trusted source – the sites listed above are reputable.
- Use EDL/MTK flashing method; if you don’t have a login for OplusFlashTool, check if SP Flash Tool works for your scatter file.
- Follow instructions carefully, especially the Vol Up + Vol Down boot step and tool login requirements.
📝 Summary Table
| Firmware Version | Android/Realme UI | Release Date | Notes |
|---|---|---|---|
| 11_14.0.1.513 (EX01) | Android 14 UI 5.0 | 09‑05‑2024 | Stable Global release |
| 11_14.0.1.509 / 507… | Android 14 UI 5.0 | 17‑06‑2024 & earlier | Full-range older versions available |
| 11_15.0.0.610 (EX01) | Android 15 UI 6.0 | 06‑02‑2025 | Latest OTA firmware |
Let me know which version you’re targeting or if you need help choosing the right flash tool set-up!