How to Upgrade Some Portable Monitor Firmware for Switch 2 via USB-C ConnectionUpdated 9 hours ago

Due to version limitations, Switch 2 may not be able to connect directly to portable monitors via a USB-C cable. To address this issue, we have updated the firmware for certain portable monitors, enabling them to work properly with a direct USB-C connection. If Switch 2 receives future system updates, we will also update the software accordingly.

The SOP (Standard Operating Procedure) for most monitor upgrade software is generally similar; the main difference lies in the firmware being loaded (please pay special attention to Step 4 for details). Here, we will use the GR19BU software upgrade SOP as an example. If you need to upgrade other portable monitors, please click the following link. 

When connecting the Switch2 to the GR19BU (UColor Apex) portable monitor via a single-cable (one-line) connection, a software upgrade is required. Please click this link to download the software and follow the instructions below.

GR19BU_Firmware_Upgrde (Updated on June 9, 2026)

• 1. Unzip Customer V1.6.zip, then open the folder and double-click RTDTool.exe. Select ISP.

• 2. Select AUX here.

• 3. Select 0 and check the box as shown in the image.

• 4. Load the firmware:

The firmware is the file in the attachment named:

190T01IDHG590T59 JG2720A_SNV1226_20260507_U190OMN571_3840X2160_144HZ English Headphone Jack Down Update Size 19 Default to 4K60Hz F006.bin

• 5. Check the two options shown in the image.

• 6. Connect the monitor to its standard external power supply, then use a Type-C cable to connect it to the computer.

Requirements:

• The computer must be a Windows system
• The Type-C port must be a full-function Type-C port
• The Type-C cable must support full-function (with DP signal)
• ⚠️ Important: Do NOT disconnect the power during the upgrade process.

• 7. Click the lightning icon to start the upgrade.

• 8. The upgrade process is as follows: