https://bdfirmware.com/ Redmi A3
If your Redmi A3 is stuck on the boot screen, showing “Invalid IMEI” , or not detecting SIM/network, you can fix it by flashing official firmware and restoring IMEI using MediaTek tools .
What Is Stock Firmware?
Stock firmware (Scatter ROM) is the official Xiaomi system software. Flashing it can:
Fix bootloop or stuck logo issues
Restore corrupted system partitions
Remove root, Magisk, or custom ROMs
Repair IMEI and network issues
Improve performance and stability
When to Flash Redmi A3
You should flash the device if:
Stuck on MI logo or bootloop
IMEI is missing or invalid
No mobile network or SIM not detected
You want to remove root or custom ROM
You want to downgrade to a previous version
What You Need
Official firmware (Scatter ROM) for Redmi A3SP Flash Tool MediaTek USB VCOM drivers Windows PC + USB-C cable Unlocked bootloader Full backup of data and IMEI (QCN/NVRAM)
Flashing Firmware – Redmi A3 (Step-by-Step)
Step 1: Download ROM
Get the official Redmi A3 Scatter ROM (MTK_scatter.txt inside)
Extract it — check for MTXXXX_Android_scatter.txt in the folder
Install MediaTek VCOM USB drivers
Download and open SP Flash Tool
In SP Flash Tool:
Click Scatter-loading → select the MT*_Android_scatter.txt
Select Download Only mode
Uncheck preloader if you’re unsure (to avoid hard brick)
Step 4: Connect and Flash
Power off the phone
Click Download in SP Flash Tool
Connect phone via USB
Wait for flashing to complete (3–5 minutes)
A green “Download OK” message will appear
Disconnect and reboot the device
How to Repair IMEI on Redmi A3
Redmi A3 runs on MediaTek Helio G36 , so IMEI repair is done via Maui META or Modem Meta tools.
Only restore the original IMEI printed on the SIM tray or box . Using fake or random IMEI is illegal .
Maui META or Modem META AP_DB and MD1_DB files (from firmware)
Install Drivers
Install MediaTek USB VCOM drivers
Run Maui META
Set connection mode to “IMEI Download”
It will wait for device in META mode
Connect Phone
Power off the phone
Connect USB — phone should be detected in META mode
Load DB Files
Use AP_DB and MD1_DB from your ROM package
Load into Maui META
Write IMEI
Go to IMEI Download tab
Enter original IMEI
Click Download to Flash
Reboot & Confirm
Restart phone
Dial *#06# to confirm IMEI is restored
Common Errors & Fixes
Problem Solution Phone not detected Reinstall drivers / use different USB port SP Flash error Try another SP Flash Tool version / uncheck preloader IMEI not restoring Use correct DB files / try Modem META Bootloop after flash Boot to Recovery > Wipe data/factory reset
Flashing Tips
Always back up IMEI/NVRAM before flashing
Avoid flashing preloader unless required
Confirm firmware matches Redmi A3 (India or Global)
Use only official firmware and tools
Ensure battery is at least 50% charged
