Question Update failed Mi Band 4 NFC

Hello, I have a Mi Band 4 with NFC and FW 1.0.5.39.

I downloaded Mi Heartrate and paid for the FW updates to my iPhone 7plus with IOS 12.4.
I tried to update to different versions of FW but get failed every time.

I want to change the language from Chines to English, my phone is Dutch and it works when i change my system language to English but when i get back to Dutch it is in Chinese again. I want my phone in Dutch as for the spellcheck, my Whats App reacts really annoying in English.

Tried to update FW but at the end of the process at 100% it says update failed.
Did a factory reset of my band, no effect, de installed the Mi Fit app, no effect so i start to get to the end of my rope for this one, does anyone has a working solution?? A FW with Dutch would be great but English will be fine.

>EDIT< Now i can update but then the Mi Band tells me to reconnect to Mi Fit and then the 1.0.5.39 FW get installed back again. If i don't reconnect to Mi Fit i can see the updated FW but the display only says to reconnect to Mi Fit??

Thanks in advance for helping out.

i don't understand what you paid for but sure that cannot be related with the Mi Band 4. NFC version can handle english and chinese at this time. no custom firmware for that to unlock/use any other languages. if you tried to install custom resources then you have to put back the original Mi Fit and install firmware updates with it to revert back the Band 4 to normal mode. you can force english with 3rd party applications while your phone is using dutch but that's all what you can do now.