Have you made format of data partition after rom installation (in wipe menu and confirmation by "yes")? Check this please.
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Download ZIP file (if you confirm the update). Then boot into TWRP (e. g. power off smartphone, press both keys: VolumeUP and power key) then in TWRP go into Install and choose downloaded ZIP file. After installation is done you can just reboot to system.
Wait few minutes till the system will be...
Did anybody test the Google Pay on A11 rom? I mean is it possible to pass SafetyNet using the same method verified on A10 roms: force to BASIC attestation and keep dg.db with 440 permission?
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You can download stock ROM from here: http://bigota.d.miui.com/V12.0.8.0.QJJCNXM/cas_images_V12.0.8.0.QJJCNXM_20200823.0000.00_10.0_cn_8c57a38882.tgz
For the flashing operation you can use the all in one tool from here: https://sourceforge.net/projects/tool-all-in-one/
Flash downloaded ROM using...
I am on Mi Ultra with latest weekly rom (20.10.15) and my picture in the slow motion mode (doesn't matter what is the FPS value checked) is flickering. So video in this mode is useless for me in terms of quality :(
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You can check the way of connection (if it is VoLTE or VoWiFi) in the dialer application on call log (you will see it next to the date/time/duration of particular call).
On Mi Ultra VoLTE is working fine but VoWiFi doesn't work at all.
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Here is the thread re harding this issue:
https://xiaomi.eu/community/threads/vowifi-on-xiaomi-mi10-ultra-rom-xiaomi-eu.58167/
By the way you can check how does it works (or not) on Mi 10 phone.
As you see on Mi 10 Ultra it doesn't work even if you switch the option on.
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So, remember to read with understanding [emoji6] You can save a lot of time then.
Glad to hear you solved your issue.
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You have to go into TWRP and format data partition (in wipe menu) then confirm writing "yes" and then reboot into system and wait few minutes (sometimes it takes 10 minutes or even more). Be patient.
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Thank you for this trick&tips. Unfortunately it doesn't work for me. I mean even if I am connected to 5GHz WiFi turning on/off Wifi Hotspot doesn't change the issue (still VoWiFi doesn't work) :(
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I am on latest weekly rom (20.10.15) and option for VoWiFi is switched on but it doesn't work on either on 2.4GHz WiFi nor 5GHz WiFi. Something's wrong in this rom on Mi Ultra.
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Not in this case. There is no Android 11 for Mi Ultra yet. We are still on Android 10 and I think this is a problem with the EU ROM for this version of phone...
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I have the same problem. The option for VoWiFi is switched on but it doesn't work at all on my both SIM cards. They work fine in other smartphones using VoWiFi.
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