So this morning I woke up and the screen on my phone wouldn't want to light up. I held down the power button, the phone powered on but the screen turned off immediately. I flashed another kernel, reflashed the rom and wiped the cache and dalvik a couple of times before that. Now the baseband version is unknown and I have no IMEI nor MAC address. I flashed miui but it wants me to put in my MI account password but I can't since I have no way to connect to the internet. And to connect to the internet I need to fix the EFS partition. But to do that I need to boot miui properly. So I find myself in this vicious circle. I've deleted setupwizard from system but it still says the device is locked. So my question is: can I flash and old version of miui oreo on top of miui pie because I remember deleting setupwizard worked back in the day? I think it should work because both roms are on ARB4 but I'm afraid I'll brick the phone. I've found this method to fix the IMEI
but any help for that too will be greatly appreciated! Thanks in advance 
edit: I've successfully downgraded from pie to oreo but that's as far as I got. I followed this guide {Mod edit: Link to paid services website removed. Oswald Boelcke, Senior Moderator} but unfortunately I can't read or write any IMEI data. I can't try it on miui for the aforementioned reasons. I'm stuck, someone please help me! My situation is pretty much the same as this https://xdaforums.com/redmi-note-3/help/stuck-connect-to-network-to-activate-t3708685 but my phone doesn't recognize anything and so I can't get into the phone to try and flash the xqcn file.
edit: I've successfully downgraded from pie to oreo but that's as far as I got. I followed this guide {Mod edit: Link to paid services website removed. Oswald Boelcke, Senior Moderator} but unfortunately I can't read or write any IMEI data. I can't try it on miui for the aforementioned reasons. I'm stuck, someone please help me! My situation is pretty much the same as this https://xdaforums.com/redmi-note-3/help/stuck-connect-to-network-to-activate-t3708685 but my phone doesn't recognize anything and so I can't get into the phone to try and flash the xqcn file.
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