You Can use different flashing boxes and many more which you can use as a flasher. flashing tools allows you to flash mobiles, without connecting flashing boxes. However, it is a little bit difficult to work for you to flash mobiles with tools instead of flashing with boxes.
on this post, you will find the official link to download Symphony v92 DA File (Boot File). The DA File helps you flash Mediatek bases smartphone and tablet.it also helps you to fix update error issue,boot-loop issue and hanging logo issu.you can use it on SP Flash Tool, CM2 Dongle and others MediaTek CPU supported tools. Symphony v92 DA File released Officially.
The DA helps you to flash stock ROM 9firmware) on your MediaTek based smartphone and tablet.it also helps you to flash.unlocking, repairing and remove the FRP from your MediaTek smartphone.
Remember: Before flashing please take a backup of your data like images, messages, contacts, and all those data which is on your mobile after flashing you will lose your all data. and your mobiles will be restored to its original settings. you can restore your backup download to your phone after successful flashing.