Hello.
I also had a chineese version with a fake global firmwire on it from aliexpress. The firmwire didn't have an update option and the recovery is in chineese.
I wanted to install the original firmwire to have acces to updates.

I installed the updater apk from the internet but i still couldn't change the firmwire because it said this could not be done as the phone is rooted. Since i couldn't find an unroot option in the settings i installed the latest super su from the playstore and unrooted the phone. After the restart the phone is in a bootloop at the flymelogo.

I can't install any firmwire from the recovery (it's in chineese but i maneged to get witch one us update, wipe and start from videos on youtube of the english version).

Please help me, the phone is bricked for 2 weeks now and I can't find any working method to restore it.
It seems to be a method on 4pda forum but i can't log to download the files (because i can't read russian and i can't use google translate for the registration form).
Does anyone have the files and can upload them to a cloud service?

Thank you!