Wow, my set also 64gb.
Please share this method, thanks.
I think many pages back, some members had mentioned it but never show method. OK la, I will do up the steps now for the benefits for all members.
Basically it is to put the phone to EDL mode (Emergency download mode) and flash using miflash beta. I believe the shops do it this way to flash the phone to "global rom". OK info as per below.....
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NOTE: TRY AT YOUR OWN RISK.
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update: 11th Oct 2016
It came to my notice is that windows 7 may have problems detecting the phone upon connecting to the PC.
If it happens to you, please download the MI PCsuite (Eng) and install it, do note that the PCsuite is just for some other necessary drivers.
Next download the QUALCOMM HS-USB QDLOADER and unzip it.
Upon connecting to the phone after you have pressed the vol+, vol- and power button to boot up, if the drivers failed to detect, please go to device manager and locate "QHSUSB_BULK" (usually is this). Manually install it by pointing it to the unzip qualcomm "DRIVER" folder.
This should solve the driver issue. Note this can be also use if you have problem other windows version. (note as of now, win7, win8, win8.1, win10)
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1. Download the preferred official fastboot rom for the XiaoMi MI Max.
2. Download and install the official miphone aka miflash from
here. This will install the neccessary drivers for detection.
3. Download and install the miflash beta from
here. This will be used for flashing the fastboot rom. The installer will installed as XiaoMiFlash
4. Unzip the fastboot rom
5. Run the XiaoMiFlash as administrator. Click on select and point it to the root folder of the unzipped fastboot rom. e.g. C:\fastboot_rom_folder_name. After that on the bottom right, check on "clean all" options.
6. On your phone, get to developer mode to enable USB debugging. This step might not be necessary though, but before my phone gotten into boot loop after flashing from Mi PC suite, i did enable.
7. Turn off your phone. Press and hold vol+, vol- and power button to get to EDL mode. Note that the screen will not show anything, you will know it has power on as it will have vibration upon bootup.
8. Connect phone to PC, wait for it to detect and install the necessary drivers. Refresh on XiaoMiFlash and your phone should show up, e.g. COM1. If it does not show up, try refreshing a few times, else disconnect and reconnect your phone.
9. Click on flash and wait. This part a bit scary, you can only see the progress on your computer as the phone screen won't show anything!!
10. After success, unplug and reboot your phone by holding on to the power button. The phone will be setting up itself to the new rom. After which, enjoy the newly flash rom.
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Cheers!