➡️| 3.4 Tutorial for version 2.1.7-2.3.0

*This update mainly includes the following contents

[Version 2.3.00]

1. Fix the issue of EIP712.

2. Optimize algorithm and code space.

3. Optimize firmware upgrade process, support upgrade by one-click.

4. Optimize PIN code processing.

Note: The firmware upgrade process is optimized and supports one-click upgrade (after completing this upgrade, the later firmware upgrade is optimized into one-click upgrade, *no need to plug and unplug hardware except BOOT upgrade)

1、If you update for the first time, it is recommended to check the KeyPal firmware upgrade tutorial

2、This upgrade requires two steps (1, upgrade Bootloader 2, upgrade firmware)

First upgrade

Open the link https://connect.keypal.pro/, turn on the KeyPal and insert it to the computer, click the WEB link that pops up in the lower right corner to open the management interface, then you can see the prompt content in the figure below. We need to start from the first step, and click [Upgrade Available].

1-1. You can see the version information of the firmwares upgrade on the interface. click [Upgrade Firmware].

1-2. Please ensure that the mnemonic phrases have been fully backed up, then check the box to confirm and click [Continue].

1-3. Follow the prompts and reconnect the KeyPal.

1-4. When you see [Device is ready], click [Install firmware], and press the Yes button on the KeyPal in accordance with the prompt to start the first update process.

1-5. When the upgrade is completed, you will see the prompt.

After the first upgrade is completed, turn on the KeyPal, and it will automatically switch off. (Equivalent to activation)

Press and hold the KeyPal button "O" to power on, the display "Update bootloader sucessful" flashes and automatically shuts down

Second upgrade

Open https://connect.keypal.pro/ again.

At this time, press and hold the hardware down button and insert the data cable and connect it to the computer, then click the WEB link that pops up in the lower right corner to open the management interface, you can see the prompt in the figure below, click Step 3 [Upgrade available]

2-1. On the upgrade interface, you can see the version information of the firmwares, click [Upgrade Firmware].

2-2. Please confirm that the mnemonic phrases have been fully backed up, check the box to confirm and click [Continue].

2-3. Next follow the prompts

2-5. Click [Close] after the upgrade is complete.

Now we have completed all the upgrades.

After upgrading to 2.3.00, the later firmware upgrade is optimized into a one-key upgrade, *except for BOOT upgrade, no need to plug and unplug hardware)