Fix for slow wi-fi/not working on Poco F1

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Oct 3, 2017
Some people having issues with slow wi-fi after some updates on Poco F1, i found a way to make this work correctly.
First, activate the developer options of your phone...
1.Unlock your bootloader with Mi Unlock:
2.After this download Minimal ADB, drivers and the ROM:
If the link doesn't work download Global Stable V9.6.22.0 MIUI 9
3.Extract the ROM inside of Minimal ADB folder
4.Install drivers
5.Turn off your phone and boot on fastboot mode(Vol - and Power Button)
6. Hold Shift and click with right Button, open command window here(if you want, can use cmd/cd command)
7. Run fastboot flash modem modem.img
8. fastboot reboot
9. Now your wi-fi working at full speed again.