Is the word "вечер" pronounced like "ˈvʲet͡ɕɨr" or "ˈvʲet͡ɕər" even though the IPA for it is "ˈvʲet͡ɕɪr"?
чи is pronounced similar to the English
chip. But here it's not a pure
чи due to reduction of
иэ. It's in between
No it's not.
[ɨ] only happens after non-palatalized consonants, and ч is always palatalized in Russian.
As a native speaker, I suppose that "ˈvʲet͡ɕɪr" is more correct pronunciation.