Fix DUID Errors

this guide offers tips for fixing duid errors or invalid mac addresses duid each brightsign player has a unique duid (device unique identifier), sometimes referred to as a client identifier string, which uniquely identifies the player to various network services brightsign players implement a duid string as described in rfc 4361 https //datatracker ietf org/doc/html/rfc4361 this is a unique string that can identify the player across many interfaces and protocols the duid is different from the player's mac address the duid consists of brightsign followed by the player's serial number for example, a player with serial number 42d8d3001870 will have a duid of brightsign 42d8d3001870 your dhcp server software may treat this as binary rather than a string, in which case you'll see the byte values 42 72 69 67 etc the spreadsheet below converts player serial numbers to duid in various formats configure dhcp server (recommended) the most reliable way to resolve duid‑related errors is to explicitly configure your dhcp server for the player’s duid this ensures the dhcp server consistently recognizes the player and assigns it the expected ip address, even if the player’s network interface or mac address changes a dhcp server should recognize device duids as defined per rfc 4361 https //datatracker ietf org/doc/html/rfc4361 note that the mac address and duid may be separate fields as they may be different if there is no specific duid field for dhcp address reservations, enter the duid string in the mac address field ip reservation if your network uses a consumer router, you may not be able to manually enter a duid as you would on an enterprise dhcp server most consumer routers, however, do allow you to reserve an ip address for specific devices which can give the player a specific network identity while specific instruction may vary depending on your router's make and model, the general steps below should be applicable log in to your router go to the dhcp or lan settings locate the player in the listed of connected devices brightsign players will often include the word "brightsign" if unsure, temporarily disconnect and reconnect the player and observe which device appears select the option to reserve , bind , or always assign this ip to the player save changes reboot the player the player will request a new ip address lease, and the router should now consistently recognize the player scripts if you have an older dhcp server that is unable to receive duids, you can use the attached scripts below to disable sending of the player's duid the scripts below modify a player's registry key to temporarily disable the sending of the player's duid if a setup docid\ xnnxywmv09iegziit7rwa that includes a network configuration is applied to a player, the setup will reset the duid registry key , reverting the player to its default mode of sending its duid as a result, since the player is identifying itself with its duid instead of its mac address, the dhcp server may not provide an ip address to the player a factory reset docid\ yncf7p2pyzo2qedf1jyim will also revert the player's duid registry key to its default state the script method generally works best with external storage devices (e g , microsd card or usb thumb drives) as the process requires a temporary autorun to be placed on the storage device these steps are much more difficult to implement, and thus not recommended, for players using only internal storage (e g , the player's internal flash or an m 2 drive) disable duid over ethernet to disable duid on the ethernet port, download this file disable duid over wireless if the player is connecting to a wi fi network (requires the wi fi module docid 54o8nv8tsdvxip35hf4cg ), download this file disable duid over all network interfaces to disable duid on all network interfaces (ethernet, wi fi, cellular modem), download this file to apply the downloaded script to a player rename whichever file you downloaded to autorun brs copy it to the root folder (e g , "sd /") of an external storage device (e g , microsd card or usb thumb drive) power down the player insert the external storage device into the player power on the player wait until the display instructs you to remove the external storage device after the player has rebooted, it will no longer broadcast its duid over the selected network interface put the previous autorun brs back in place so the player can operate normally