[ GUIDE ] Resolving ' Invalid IMEI ' error on Mediatek 6589 / 6592 Devices.

This guide will help you gain back your IMEI on your Micromax Canvas Knight [Only if the Baseband is not lost].

NOTE :

1.Only for ROOTED devices !

2. This guide is useful only when the 'Baseband Version' of your device is avilable. If the device is showing 'Unknown' in the Baseband tab in the About device section , then you will have to use a different method.

3. This method is also applicable for many other MTK6589 and MTK6592 devices [Even more , maybe].

STEP 1 :

1.1 Go ahead and install Mobile Uncle Tools from Playstore .

STEP 2 :

2.1 Open the Mobile Uncle Tools and grant Super User permissions

2.2 Click on Engineer Mode and then click on 'Engineer Mode (MTK)'

This will take you to the MTK Engineer Mode.

STEP 3 :

3.1 Now swipe right once and you will find the ' Connectivity ' tab.

3.2 Under this tab , you will find ' CDS Information '. Click on that.

3.3 Next , find ' Radio Information '.

3.4 On opening Radio Information , you will find 2 options : Phone 1 and Phone 2 . This denotes the IMEI slots for the 2 SIM cards.

STEP 4 :

4.1 You'll find a page with ' AT+ __________________ '

4.2 Now , just after the '+' , type 'EGMR' . As you start typing , it will automatically pop-up four messages.

4.3 Select the first one from that : AT+EGMR=1,7,"".

4.4 Between the two double - inverted commas , type in the IMEI 1 . You can find the IMEI from the backside of the device [If at all you have not removed that TAG] like this .

AT+EGMR=1,7," 15 digit IMEI number "

4.5 Now click on " SEND AT COMMAND ".

You will receive a small toast message like this " AT Command is msent ".

That message shows that the IMEI has been restored !

Now , repeat steps 4.1 , 4.2 and 4.3 for Phone 2 .

But , in step 4.3 , select " AT+EGMR=1,10, "" " ( It is the second option ) Repeat rest of the steps and you will have both the IMEI written on your device.

To check , just type *#06# on dial-pad and it will show your IMEI numbers .

STEP 5 :

* Reboot !

And then the SIM cards will be detected .