Smartfren Andromax is Qualcomm CDMA GSM Device.
Sometime after debricking this device, you face imei & meid become null or invalid.
This is tips and trick how to repair imei & meid Smartfren Andromax Device.

First Step: You have to download modem firmware below :
For 4G Devices : Smartfren Andromax 4G modem firmware
For non-4G Devices : Smartfren Andromax non-4G modem firmware

2nd Step: You have to Root your Device, and enabling USB Debugging.
Now open Ufi Android ToolBox , go to ADB make Identify Device write modem firmware in modem partition list.

mod1

You can replace this modem partition, when your device support Firehose Protocol via qualcomm emergency mode (9008) too.

mod2

Last Step: To write imei or meid qualcomm based device, you have to activated Diagnostic Port.
As long as your devices Rooted, it so easy to enable diagnostic port via Ufi Android ToolBox,
Just by click Read button in Service Tab.
After enabling Diagnostic Port, now you are Ready to Write imei and meid according to the label of your devices.

mod3

mod4

If you have different methode or another tips and trick related to this topic, please feel free to write your comment below..

good luck UFiXERs