Great job...
I have used Mi Flash, following your procedure to replace the "multilingual" ROM from Banggood in "Franglais".
My new Redmi3 has of course a locked bootloader.
I have used the suggested "multi_ido_V7.1.3.0 MiFlash" ROM
I have selected the "Flash all" option in MiFlash to get a clean install.
All is quite OK, close to perfection, except for some minor bugs as for example Mi Remote application crash.
It is probably corrected in the recent "xiaomi.eu_multi_ido_V7.2.4.0.LHPCNDB_v7-5.1.zip"
But it can not be directly flashed using Mi Flash.
And my bootloader may stay locked for a while, depending on the mood and the availability of Xiaomi
Can you generate for all of us a new "multi_ido_V7.2.4.0." in the required MiFlash format.
Thanks
Gluto...