This same trick with articles previously created Flashing HP China via USB without the Box, the difference is not only pressing the boot. so stay plugged in the usb cable that was already dimodif as in the picture.
It's been tested by that find it ashakaas tested on IE mtk 6252, please test on other types of mtk.
1. software: for mtk Flashtool
Update V Flashtool 5.1320.00.00
2. driver: driver Mtk usb
3. video tutorial: Video Format Mito
1. Extract the downloaded file folder open kemuadian search URFlash_tool.exe. When there is a warning ' scatter doesn't exist ' then press OK.
2. Click Options, and then select USB Download/Readback, because we wear the usb interface.
3. Click the Format,
4. When a POPs the Format Option Then select FAT formatting and then press OK.
5. When the application is currently in a State of waiting for usb like image below, then prepare the hp want formatted complete with battery and then immediately plug the usb cable from the computer to last's hp.
6. If requested via the driver, then navigate to the folder you have driver mtk download.
7. When smooth loading will be marked red and blue.
8. When completed it will exit the dialog circle of blue.
9. Good luck.