[Meizu MX] lacroix05:
I have the completely same problem. My case is after flashing recovery to stock then installing the Flyme6 rom from stock recovery. After that my meizu died and have no respon at all, you can say it's HardBrick-ed. And i will share some of my experience to repair this thing. Beware of wall of text.

Long story is :

Some people say unlock the bootloader again, flash the secro, bla bla bla, but it's not working at all, because the sp flashtool didnt detect the meizu at all. Usually (at least on xiaomi) if it's not detected by flashtool in HardBrick mode, you need to remove the battery. But, in meizu m2 note you got Non-Removable battery. Actually you can remove it using special ( not that special though ) screwdriver. Unfortunately i didnt have it.

After long frustation i have stupid idea, if i cannot remove the battery, what about the sim plate? yeah, after i remove the sim plate, the flashtool detected my meizu again LOL.

Very very very unfortunately no matter what i flash, this thing still WONT BOOTUP, OMG. you dont know how stressful it's. I already follow step by step in here https://xdaforums.com/meizu-mx/development/howto-flash-twrp-flash-cm-gapps-t3467516 but the stupid paperweight still don't want to bootup.

After 3 days of hardworking and stressful day i found 3 possible desperate solution. First go to service center (this is easy solution). Second, flash again using MRT Dongle ( unfortunately again, i dont have any friend that have this ). Third, change the damned EMMC ( ok, this is desperate solution that guaranteed work).

Lets talk the first solution. After much sadness and sorrow ( XD ) that day i bring the dead paperweight to meizu service center ( I live in Indonesia ). They told me they need 3-4 day to check the damage. After 4 days they are calling me to confirm damage and the cost of repair. They say this meizu need to change the EMMC. Can you guess how much they charge me? It's Rp 900.000 in dollar it's about $ 67.49 just for repairing the dead brick, OMG. I dont know if that $ 67 is normal in US for charge of repair. But here, in indonesia, if you add $ 10-20 more you can get good second hand. So the service center solution is stupid. Then i cancel the order, luckily to cancel order it's free.

Second solution you need to use MRT Dongle. Well because i dont have any friend that have this, and consideration of the price (about $ 90-100) i just skip this solution.

Third solution is to change the EMMC. desperate one, but usually the working one if sp flashtool cannot do anything for your hardbricked phone. Replacing EMMC is the same solution given from Service Center, but the price they giving me is basically extortion. After searching good smartphone technician in my location, i try to contact him and ask if they can repair my dead meizu.

The good technician also say the EMMC need to be replaced, but with half of the price Service center giving me. It's Rp 450.000 or about $ 33.75.

After waiting 1 more day, VOILA MY PAPERWEIGHT NOW BECOME SMARTPHONE AGAIN, THE MAGIC. And the good technician also say they replace the EMMC to 32GB, OMG AFTER 10 DAYS STRESSFUL DAYS THERE ARE SOME GOOD NEWS. Now I dont need sdcard anymore :D

Okay that's the long story not short-ed.

Few tips for you lineage user :

1. IF you want to change to FLYME without changing to stock recovery ( alias still using TWRP ) you can find the custom FLYME in here : https://4pda.ru/forum/index.php?showtopic=666977 this is the most complete meizu m2 note custom roms and tutorial that exist for now. use google translate because it's on russian ( i think ).

2. Be careful if using twrp from moyster ( i am not blaming you moyster, but i still need to write this for warning sake ), you will get error when formatting data, even if you already change the twrp to the one in 4pda. until now i still dont understand the solution or the problem.

3. If you want to use FLYME use A version, because A version is suppporting VOLTE, while the G version didnt have it. But G Version have less bloatware. Choose your pick wisely.

Why i use flyme6? because no bugs ( moyster lineage always has bug like hotspot and cannot download big file in playstore), better 4g reception (yeah, this true, at least on my location), better camera (now my whatsapp camera can focus). I dont understand what is the advantage of using android Nougat whole using this smartphone. 1 Year ago i start to using this Lineage to feel what is the difference. Even now i still dont feel the difference at all except the launcher view.

I am not blaming moyster at all, and anyone else should not blame moyster too. He (or she, i dont know) is One Man Army. He creating custom Lineage for us ALONE. I and many else understand how annoying it's to create cusrom for MTK phone.

I give all my thanks to you moyster that have created this Lineage 14 For Meizu M2 Note Project. And everyone that related to this project.