Release Notes

Release Notes

Last updated on January 29, 2023 at 12:15am CT.

Current software version is v1.0.3 and OS 230117. This is a full OS update and will take about 5-7 minutes to download and install. Please see a video of the OS update process at this link. We are rolling out this release over the course of a few days. All devices will be enabled to download this release by Monday, Jan 30th.

OS versions are listed on the About->Device Info Screen.

Only versions v0.12.1 and higher can do an OS update. If you are running a lesser UI version, you must first update to v0.12.1.

Known Issues

  • An increasing number of software updates have been failing with the cryptic message “unexpected error”. This is due to the increasing traffic to our update server. We will resolve this soon and make the message more informative with the version 1.1 release. Until then, please try the software update again if you see an "unexpected error" message.

Coming Soon


  • Play/Pause/FF/REW for ATSC 1.0 channels. 5-minute buffer size using DRAM only.
  • These releases, through v1.4, will not show preview tiles during FF/REW. This feature will be added after the first DVR release.


  • micro SD card support for a two hour pause/play buffer.


  • Play/Pause/FF/REW for ATSC 3.0 channels
  • 14-day guide data


  • First release with DVR features

Revision History

v1.0.3, released Jan 24, 2023

  • This release will cause existing guide data to be erased and rebuilt from scratch. This happens in the background and does not require a channel scan.
  • Fix for incomplete channel scan in Baltimore , Seattle and Phoenix markets 
  • Minor UI improvements and changes to device info screen.
  • Minor changes to the 7-key simple remote user interface to get it ready for DVR use.

v1.0.2, released Dec 7, 2022

  • An issue with blank video when coming out of standby mode has been fixed for single tuner devices.
  • Search results are now grouped into "Now" and "Later" programs.
  • Support has been added for PSIP data that does not contain service location descriptors (seen in Atlanta)
  • Multi-PLP support has been improved
  • An alternate user interface has been added for a 7-key simple remote. Such a remote is not yet available but the user interface can be accessed by following the instructions available at this link.

OS v1205, released Dec 7, 2022

  • The standby mode known issue has been fixed. In OS 0920 if a device was placed into standby mode by pressing the red power button on the remote, sometimes HDMI output got disabled when the power button was pressed to start using the device again. The workaround was to not put the device into standby and turn the TV off. If the HDMI output got disabled, power cycling the box fixed the issue
  • Fix ATSC 1.0 interlaced content artifacts. Sometimes ATSC 1.0 interlaced content like 1080i or 480i would start showing jagged edges.

OS v0920, released Oct 20, 2022

  • Fix for ATSC 3.0 lip-sync
  • Fix for occasional ATSC 1.0 slow motion video

v0.12.1, released Oct 18, 2022

  • Redesigned channel scan page to show more details about all RF channels without scrolling. See a demo at 1:30 in this video.
  • Expand 4K resolution display in the info banner, to show frame rates as 4K30 and 4K60.
  • Ability to upgrade OS image.
  • HDMI-CEC will be turned off completely because when a box reboots after a software update, CEC turns on the connected TV.

v0.11.5, released Oct 10, 2022

  • Minor improvement in ATSC 1.0 channel detection during channel scan.

v0.11.3, released Sep 19, 2022

  • Fixed known issue #5 (Added support for “Upload Diagnostics”).
  • The info banner now shows content resolution (480i, 480p, 720p, 1080i, 1080p, 4K).
  • Added guide data search to Main Menu
  • Added YouTube to Main Menu

v0.10.1, released on Aug 23, 2022

  • Fixes known issue #7 (“install update” pop-up used to timeout).
  • Pressing DVR keys on the remote control displays a “Feature Coming Soon” message.
  • The Hide/Show menu allows hiding all ATSC 1.0 channels so you can surf just ATSC 3.0 channels.
  • Fixes handling of duplicate channel numbers from neighboring markets in channel guide.
  • Scrolling menu screens (like hide/show channel list) show scroll arrows.
  • Fixes an occasional lockup when ATSC 3.0 signals are being broadcast on multiple frequencies.
  • Easter egg! Enter 159753 and press the Menu key.
  • Fixed known issue #6. (Blank screen if “Cancel” is selected for “Install Upgrade” pop-up in less than one second.)

v0.9, released on August 8, 2022

  • UI themes have been introduced. You can select different UI color themes now.
  • Known issue #1 has been fixed – UI responsiveness during poor signal conditions.
  • Captioning has been improved.
  • Known issue #8 has been fixed – Dolby Dialog Enhancement option can be left on now.
  • The grid guide shows a vertical “time line” to indicate the current time.
  • Captions now display within the scaled video window in the Grid Guide.
  • The UI display a spinner during channel change transitions.

v0.8.1, released July 26, 2022

  • Remote access is now under user control.
  • The Setting and Guide options have been swapped in the main menu. This will make it easier to access settings.
  • Menu option spacing has been adjusted and sub-menu placement has been made more consistent.
  • Channel scan has be sped up considerably by reducing the amount of time we wait for guide data on each frequency. Guide data that is missed during the initial channel scan can be acquired later using background channel scans on a dual-tuner box and during standby mode on a single tuner box.
  • The main menu has a new option titled “Buy a ZapperBox”. This will bring up a QR code that can be scanned to go to our website.
  • The antenna setup menu displays signal strength and signal-to-noise ratio values even without a signal lock.

v0.7, released July 18, 2022

  • Some improvements to known issue #1 (UI responsiveness during poor signal conditions).

v0.6, released July 1, 2022

  • First customer release version

ZapperBox, Inc., 1776 22nd Street, Suite 200, West Des Moines, Iowa, 50266, USA Tel: 866-932-1956