14 days very cepat one.  Relax, have a coffee.

Downloaded the fastboot rom, i had to extract twice using winzip i dunno why but but eventually kautim the flashing using miflash.

Been playing for many years with phones already, change USB charging port, screen, etc.  It's actually quite easy to open Redmi 5 Plus, all you need are fingernails and a guitar pick, no need to unscrew anything.  Then just short out 2 pins on the motherboard; utiup is your friend to pick up new knowledge    If an old man like me can learn how to do it, anyone can do it lo...

Read in xiaomi forums that flashing global ROM on China phone using testpoint will brick it, so I won't even bother trying 

14 days very cepat one.  Relax, have a coffee.

That being said, i finally succumbed to my own curiousity and flashed in the global rom last night. I was told that the recovery method would fail, so just to avoid creating problems, i went along with fastboot method that others have successfully done. Downloaded the fastboot rom, i had to extract twice using winzip i dunno why but but eventually kautim the flashing using miflash.

Took a while starting up after flash i was worried sick if i had farked it up. Eventually it booted normally and kautim the initial setup. Havent really fully setup since i didnt plug my sim card in, but i noticed that somehow scrolling through pages is not as smooth as china 9.2.3.0 rom. Probably i just psyho abit lah.
I think even those shop guys will learn from youtube and download the programmes dulu, just like what those ppl in forum did. The only advantage they have is they have suitable tools to open up the back cover lol. Anyhow from what i read in the forum, only opening up the back cover is the hard part. Supsequent shorting the test point and flashing is just as easy as normal flashing.

If it happened to me, since i have got nothing to lose i would really go and do the testpoint to revive the phone. Cant have my money go down the drain just like that.

BTW just using mi flash tool will work.
Wait I get my mi notebook and get ready for playing around my toy as well.

https://m.geekbuying.com/item/Xiaomi-Mi-Not...ml?Currency=USD

Why you choose Mi Notebook instead of from big players such as ASUS, Acer, HP, Lenovo, etc etc ?

does direct d now have solution to flash back official global rom,if i send back direct d to do warranty to reflash the rom?

I hope I still have the phone after 14 days

Fastboot files are .tgz files which extracts into a .tar file which will then need to be unzipped for its full contents for MiFlash to work its magic.

My prefered method of getting custom ROMs onto Xiaomi phones is to install TWRP after the bootloader is unlocked, then downloading a flashable zip file (either an XDA cooked ROM or xiaomi.eu ROM) to be flashed using TWRP.

So far, I'm not very impressed with the battery drain on 9.2.3.0 China ROM 

Where do you guys get the accessories for Redmi 5+? Any good deals?

I just order from aliexpress

Then the earlier leak was real, meaning I'll need to wait till 28 February only can order mine.

Just ?
Just  = just right.
I thought you had your set already

This is "tomorrow" already but still no news update. 
Wow! You are really phone doctor!
By the way, since you can testpoint to China ROM, can you testpoint again to official Global ROM?
Too bad, then just make warranty claim from seller. So sorry for heard that! 
Xiaomi Notebook... 

Just reject Wow Phone Redmi 5+ from LEX courier. Don't have time to mess around with a faulty phone. Very unethical vendor.

then wat the next step??? can refund? or any other action?

Just wait LZD email for refund.