# Trouble Shooting ## Spatial Reality Display Settings ### The camera view window's frame rate is too low - Make sure USB cable is connected with host PC via USB 3.2 when ELF-SR1 is connected. - Try the following steps. - Unplug the power cable from Spatial Reality Display - Unplug USB cable from the host PC - Wait for a few seconds - Plug the USB cable into the host PC - Plug the power cable into Spatial Reality Display and turn it on ### An error dialogue appears - Device not found  - This message will appear if the Spatial Reality Display is not connected. - Make sure the Spatial Reality Display is connected to your computer via USB and display cables. See for the details: [User Guide](/en/Products/Developer-Spatial-Reality-display/manual/en-us/download/pdf/). - Device lost  - This message will appear if the Spatial Reality Display is disconnected while running the Spatial Reality Display Settings app. - Reconnect the Spatial Reality Display to your computer, then restart the Spatial Reality Display Settings app. - Session Error  - This message will appear if another app that uses the system is running when the Spatial Reality Display Settings app is launched. - Two applications that use the system cannot run simultaneously. ## Firmware Update for ELF-SR2 ### The screen message does not appear even if the USB flash drive is inserted into the UPDATE connector - After removing the USB flash drive, turn off the power of Spatial Reality Display and try the Update operation again. - Make sure that the update file is located in the root folder of the USB flash drive. - Make sure that the USB flash drive is formatted with FAT32. ### No message appears and the screen turns dark even if the USB flash drive is inserted - Make sure that Spatial Reality Display and the PC are connected properly with the USB cable. - Remove the USB flash drive, turn off Spatial Reality Display, and try the Update again. ### The message displayed when the USB flash drive was inserted disappeared - Press the - button while the message is displayed to turn it off. - To display the message again, remove the USB flash drive and then insert the USB flash drive again. ## Firmware Updater for ELF-SR1 ### Spatial Reality Display does not turn on after Firmware Update(ELF-SR1) The update process may have failed. Make sure the AC Adapter of the Spatial Reality Display is plugged in, connect it to the PC with the HDMI / USB cable, and then run the firmware updater again.