Arduino Development Board

USB Host Shield Expansion Board. The three points in the image need to be soldered like mine; it’s best to buy one that is already soldered.

Finally, stack the development board and the expansion board together.

Download the necessary files.

(Files can be downloaded by replying 1 in the group or on the official account.)

Below is the configuration tutorial for Windows.

After downloading Arduino_win and unzipping, you will get the files shown in the image below.

The first step is to install arduino-1.8.13-windows.exe.

Then click I Agree.

Then click Next.

Select the path and click install.

During installation, install all the drivers that pop up.

After opening the Arduino software, it will automatically create a directory in the documents. Open this directory and copy USB_Host_Shield_2.0 and USB_Host_Shield_Library_2.0 into the directory shown in the image.

The file names must not be modified even by one character.

Next, we open the extracted checkm8-a5.

Open checkm8-a5.ino.

Then plug in the development board.

After plugging in the development board, it must be able to read the Android port; otherwise, it cannot be used.

Then follow the image to select the corresponding port.

For iPad2 and 4S, change to A5_8940.

For iPad2,4 (the product type of iPad2 is 2.4) mini1, ipod5, change to A5_8942.

For iPad 3, change to A5_8945.

Once the software indicates that the upload is successful, it means the configuration is complete. See the end for DFU cracking steps.

Next is the configuration tutorial for MAC.

Download the file from the group and unzip it. The checkm8-a5 folder needs to be renamed to checkm8-a5.

Open Arduino, then connect the development board, and set it up as shown in the image above.

Import the drivers to the path as shown in the image.

After importing, open the checkm8-a5 folder and click on checkm8-a5.ino.

Once uploaded successfully, you can proceed to crack DFU.

1. First, configure and upload successfully according to the above steps.

2. Connect the device that needs to crack DFU mode to the computer.

(If it cannot enter DFU mode, download the MIX Ramdisk and follow the guide to enter DFU mode.)

3. After entering DFU, connect the device to the development board.

4. The red light will flash a few times and then stay on, indicating that it has successfully entered DFU cracking mode.