SamyGO

zoelechat wrote: ↑

Mon Apr 17, 2017 9:02 am

Bonus:

• Firmware downgrade
  ...has never been so simple! Here are steps.
  
  • Make a copy of /etc/info.ini to some RW place, let's say /tmp
    Edit that copy and change current firmware version number to any dummy lower one, e.g.:

    Code: Select all

    Version=T-HKMDEUC-1471.2;

    to

    Code: Select all

    Version=T-HKMDEUC-1000.0;

  • Mount bind edited ini copy over original one:

    Code: Select all

    mount -o bind /tmp/info.ini /etc/info.ini

  • Re-enable SWU services disabled by root:
    In case you get some odd error at that step, check from that post.

    Code: Select all

    systemctl start swu-service.service
    systemctl start swu-core-tv.service
    systemctl start swu-verifier-tv.service

  • Now you can extract any lower firmware to USB, and go into software update menu
    If you don't know how to update fw by USB, check Samsung website, no such support here.