Insert the prepared SD card containing the R50bR50.03 firmware files.
The system should immediately recognize the update and ask: "Do you want to update from version X to RNEG_D_R50b_R50.03?" Select (or the equivalent confirm button). rnegdr50br5003 update
It's possible that this refers to an internal update within an organization or a piece of proprietary technology that hasn't been publicly announced or documented. Insert the prepared SD card containing the R50bR50
Temporarily disable aggressive antivirus software that might block the low-level flashing process. Run Installer Execute the .exe or .bin file as an Administrator. 5 Restart rnegdr50br5003 update