Windows 10 X64 21h1 Pro 3in1 Oem Esd Pt-br Junh... [verified] [LATEST]

It sounds like you're referring to a specific Windows 10 ISO image (likely from a torrent or scene release) named something like:

: Certifique-se de que o Windows está atualizado. Acesse Configurações > Atualização & Segurança > Windows Update. Windows 10 X64 21H1 Pro 3in1 OEM ESD pt-BR JUNH...

Since 21H1 is unsupported, immediately after installing: It sounds like you're referring to a specific