Download Realme 12X 5G RMX3998 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 12X 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 12X 5G RMX3998 Flash File Firmware:
RMX3998export_11_15.0.0.602EX01
Realme 12x 5G
Project No = 23705You’re looking for the Realme 12X 5G (RMX3998) flash file (stock ROM)—the official firmware image to reinstall or recover your device. Here are some reliable options and useful instructions:
Available Flash Package Versions
1. Version 11.14.0.1.522 (EX01) — Released June 29, 2024
- Identified as official global firmware (Realme UI 5.0, Android 14).
- File name:
RMX3998export_11_14.0.1.522(EX01)_2024062916160086.zip. - Approximate size: 6.8 GB.
- These details line up across sources like RealmeFirmware.com, OppoStockROM, and GetDroidTips.
2. Version 11.15.0.0.602 (EX01) — March 1, 2025
- Slightly newer build, also Realme UI 5.0 (Android 14).
- File name:
RMX3998export_11_15.0.0.602EX01_2025030111460123. - Available on ROMexperts and File64, published in April 2025.
Where & How to Download
Option A: Version 11.14.0.1.522
- Available via RealmeFirmware.com (official tracker), OppoStockROM, or GetDroidTips tutorials.
Option B: Version 11.15.0.0.602
- Downloadable from ROMexperts or File64.
Flashing Instructions (General Steps)
- Choose the correct firmware for your exact model (RMX3998) and region (EX01).
- Download and extract the ZIP file using WinRAR or 7‑Zip.
- Install necessary tools and drivers:
- Realme QCom + MTK drivers or USB VCOM drivers.
- Flash Tool: SP Flash Tool or Oplus Flash Tool (depending on source).
- Boot into flashing mode:
- Power off device → hold Volume Up + Volume Down → connect USB cable.
- Load firmware in flash tool, click Start or Start All to begin flashing.
- Wait for completion (success message/green indicator), then disconnect and reboot.
- Always back up data first, as flashing will erase user data.
Quick Comparison Table
| Version | File Name | Release Date | Size | Notes |
|---|---|---|---|---|
| 11.14.0.1.522 (EX01) | RMX3998export_11_14.0.1.522(EX01)_2024062916160086.zip | June 29, 2024 | ~6.8 GB | Stable global release |
| 11.15.0.0.602 (EX01) | RMX3998export_11_15.0.0.602EX01_2025030111460123 | March 1, 2025 | — | Newer build, potentially bug-free |
Final Recommendations
- For a well-tested official build, go with 11.14.0.1.522.
- If you prefer the latest firmware, choose 11.15.0.0.602, but ensure it’s from a reputable source.
- Always verify the integrity of downloaded files (checksum if available), and ensure full battery and backups before flashing.
Community Note
Many users report issues when the wrong version or method is used, or when credentials (like Oplus tool login) are required and missing. Be sure you have the correct files and a reliable flashing tool before proceeding.
Let me know if you’d like direct download links, official flashing guides, or help troubleshooting if anything goes wrong!