INCREASE YOUR APP STORAGE TO 6GB FOR MICROMAX A190 And walton Primo rx2

Full credits :Jason Stephen Singh

I am just posting what he said here...

Note: USE AT YOUR OWN RISK..neither me or Jason stephan singh or anyone will be responsible to whatever happened to your device ..it is strongly recommended to make a mtk droid tools backup via pc..for maximum recovery of device..in case sometime goes wrong

"Hi Guys, I have managed to edit the EBR1 and EBR2 files and I have increased Internal Storage to 6GB. This was an extremely difficult task and took me a very long time as I'm new to all of this. I really hope you guys appreciate this and please feel free to flash your phone as it is basically just re-partition it."

 Things you need.
1)A Rooted Phone
2)Recovery Mode
3)SP Flash Tools
Procedure: 
First make a backup pf existing ROM via recovery
Then open SP Flash and in Download mode select the Scatter file Present in the downloaded file below. It will automatically load EBR1 and EBR2. Make sure only those are ticked, like in the picture below.
Now hit the download button and connect your phone without the battery. After it flashes disconnect your phone from the computer, put the battery back in and start up the phone in recovery mode.
Once in CWM Recovery at the bottom of it you will see some error saying it cannot mount something. Do not worry. Restore factory settings, then wipe cache partition, then wipe dalvik cache. After this, restore your previous back up ROM and start up the phone.
You will now have 6GB Internal storage.

Download Link for 6GB Internal Storage-
http://q.gs/8tSCj

For those who using Windows 8 and above and have problem with SP Flash, it's because the driver cannot install properly. You will eed to follow this guide- http://q.gs/8tSDL

BUG-Don't shift apps to SD Card. I hope 6GB Internal is enough. This is the maximum. I tried 7GB but the app storage still showed 6.08GB, so this is the maximum.

For those who want a flashable zip through CWM, p.m me.