Anyone know, How to increase character limit from 140 to 280 Character. Someone posted today 280 character but i don't know how??

Last time i posted with 280 character by following trick:
1. open desktop browser
2. add this extension
3. click on
4. paste that button on bookmark
5. open tweetdeck
6. click on that button you've bookmark
7. enjoy

But now twitter blocked this feature......Please tell me if anyone know any other trick !!