LG webOS TV

Install. Pair. Start casting.

K12Cast supports compatible LG consumer TVs running webOS 5.0 or newer.

Install and pair

1. Open the LG Content Store on the TV, search for K12Cast, and install the app.
2. Launch K12Cast. The TV displays a short, temporary pairing code.
3. On another device, sign in to your organization’s K12Cast administration dashboard.
4. Open Admin → Displays, choose Add display, enter the TV code, and assign a display name and building.
5. The TV confirms pairing and begins receiving authorized schedules, presentations, classroom sessions, and alerts.

Pairing a TV always requires approval from an authorized K12Cast administrator. Never share a pairing code outside your organization.

Network requirements

• Reliable internet access and outbound HTTPS on TCP port 443 to cast.k12first.com.
• Correct TV date and time so secure certificates can be validated.
• For screen sharing across restricted networks, the organization may need approved WebRTC STUN/TURN connectivity.
• Network filters should allow the media and integration domains administrators intentionally add to K12Cast.

If the TV will not connect

• Confirm another app on the TV can reach the internet.
• Restart K12Cast from the LG launcher and choose Try again if the recovery screen appears.
• If a pairing code expires, leave the app open; a new code is created automatically.
• If the TV was previously paired, ask an administrator to confirm that the display is active and has not been revoked.
• Restart the TV after installing a webOS firmware update.

Consumer TV limitations

LG consumer TVs require a user to launch applications and may apply system screensaver or energy-saving behavior. Configure the television according to your organization’s operating policy. Sites that require guaranteed power-on launch, locked inputs, centralized television management, or continuous commercial signage operation should evaluate LG commercial webOS Signage hardware.