11 ULTRA CHINESE WITH GLOBAL ROM

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Hi All ,I just bought 11 ULTRA Chinese version with unlocked bootloader HYPER OS 1.0.11.0UKAMIXM I had set the region to UK then recieved HYPER OS 2.05.0UKAMIXM 2.1GB should I update it or not and what Things should I do to get to work with NFC GPAY other banking Apps