DESCRIPTION

Flash rom 5.1 from needrom (https://www.needrom.com/mobile/amoi-a900w-int/)

Copy the root software UPDATE-SuperSU-v1.94.zip to handy sdcard. Rename it to update.zip

Start into recovery mode with ADB from MTKTools like this: d:MTKdroidToolsadbadb reboot recovery

Then a simple recovery menue is available. There use install update.zip

After reboot the handy have root privilege.

After starting MTKdroidTools, press ROOT button and make sure the handy get access ftom MTKdroidTools. The you should have same situation like picture describe.

Press button "Recovery and Boot". Input boot.img and recovery.img. Let the tool do his work and wait until reboot

The start into recovery mode again use adb or an apk like reboot.apk

※Please make a backup of your device before installing or updating ROM