Method 1: Directly Replacing DTB File

Prerequisite

Make sure you have executed the steps in Generating DTB.

Execute the following steps under the root directory of Linux to replace the DTB file:

Insert the micro-SD card to the PC with Ubuntu system, and execute the following command to check the SD card partition:

sudo fdisk -l

Example Output:

Device      Start     End Sectors  Size Type
/dev/sdc1    4096    8191    4096    2M unknown
/dev/sdc2    8192   16383    8192    4M unknown
/dev/sdc3   16384  221183  204800  100M EFI System
/dev/sdc4  221184 4503518 4282335    2G Linux filesystem

In this output, the /dev/sdc3 partition is the SD card partition.

Mount the SD card partition under the mnt file path by executing:
```
sudo mount /dev/sdc3 /mnt
```
Execute the following commands under the Linux root directory:
```
sudo cp arch/riscv/boot/dts/starfive/<DTB_File> /mnt/dtbs/starfive
```
Tip:
Different boards use different dtb files:
- jh7110-visionfive-v2.dtb: for version 1.2A and 1.3B board.
- jh7110-visionfive-v2-ac108.dtb: for version 1.2A and 1.3B board with ac108 codec.
- jh7110-visionfive-v2-wm8960.dtb: for version 1.2A and 1.3B board with wm8960 codec.
Tip: You can refer to the silk print on the board for the version information.
Example Command:
```
sudo cp arch/riscv/boot/dts/starfive/jh7110-visionfive-v2.dtb /mnt/dtbs/starfive
```
Enter /mnt and modify the configuration file (uEnv.txt) by executing:
```
cd /mnt
sudo vim uEnv.txt
fdtfile=starfive/<DTB_File>
```
Example Command:
```
cd /mnt
sudo vim uEnv.txt
fdtfile=starfive/jh7110-visionfive-v2.dtb
```
Figure 1. Example
Unmount the /mnt directory:
```
sudo umount /mnt
```
Remove the micro-SD card from PC and insert it into VisionFive 2, and power on VisionFive 2.

Note: You can also replace the DTB file by performing the following steps:

Directly copy the DTB file to the /boot/dtbs/starfive directory under the Debian system using a USB drive or through SCP
Modify the configuration file uEnv.txt. See Step 4.