proceso con el Modem Gpon ZTE F660 ONT

  * https://www.nirsoft.net/utils/router_password_recovery.html#DownloadLinks
  * https://help.ui.com/hc/en-us/articles/115009335068-UFiber-GPON-Supported-Third-Party-OLTs
  * https://www.ui.com/download/ufiber/ufiber-nano-g
  * http://web.archive.org/web/20190214022357/https://blog.onedefence.com/changing-the-gpon-serial-on-the-ubiquiti-ufiber-nano-g-part-two/
  * http://web.archive.org/web/20190214022541/https://blog.onedefence.com/changing-the-gpon-serial-on-the-ubiquiti-ufiber-nano-g-part-one/
  * https://github.com/melisska/ufiber_nano_serial_hack
  * https://community.ui.com/questions/UFiber-Nano-G-GPON-Huawei-HG8245-Configuration/56e5488c-048d-4179-a3dc-cdbcf6939617?page=1
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