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  1. *Trung

    Post Huawei E5770 custom firmware & O2 SIM unlock

    You can use FTP server as my instruction above. I was able to flash the custom firmware successfully. I my case, my original firmware was 21.316.03.00.1133 but I was able to flash the downgrade firmware version 21.327.01.00.1133.
  2. *Trung

    Post Huawei E5770 custom firmware & O2 SIM unlock

    For those who need to After looking around, I was able to download every files using this ftp server. If you guys can not download files because of the dead links in this article, you can go to the FTP server here: ftp://serv.valdikss.org.ru/Downloads/Huawei_Firmware/E5770s/o2 Unlock/ ( or...
  3. *Trung

    Post Huawei E5770 custom firmware & O2 SIM unlock

    Can you please reupload these files? I tried many times but could not download any of it. Thank you so much.