Desperately need help.

hi all. I have a Huawei honour 8. Just tried to rollback from 5.0 to 4.1 simply followed a YouTube video and downloaded a file that said rollback 5.0 to 4.1. It installed the updates as it showed in the YouTube video but now can't go past the google id page. He trouble it doesn't show the keyboard only the google sign and a mic. What went wrong don't know. Any suggestions on how to sort this problem out. Thanks in advance

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