reComputer R1100 Flash OS

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The reComputer R1100, powered by the Raspberry Pi CM4, is a versatile edge IoT gateway with AI capabilities. It features a comprehensive range of industrial interfaces, including 2x Ethernet, 2x USB, 2x RS485, 2x RS232, 2x DI, and 2x DO, along with flexible wireless connectivity options such as 4G, LoRa®, and Wi-Fi/BLE. These features make it an ideal choice for various industrial applications. The reComputer R1100 series is widely used in IoT applications, including data acquisition and process monitoring, automation and robotics control, intelligent manufacturing, and industrial communication and networking. Its compact size, flexibility, low cost, and programmability provide strong support for automation, IoT systems, and beyond.

Hardware Requirements

You need to prepare the following hardware

• reComputer R1100 x 1
• Host Computer (Windows/Mac/Linux) x 1
• Ethernet cable x 1
• Power adapter (12V-24V) BYO
• USB Type-C cable x 1

Software Requirements

• usbboot tool
• Raspberry Pi Imager APP

Boot from NVME

Flash os to the NVME

Please refer this link, and then insert it into the M.2 slot.

Boot from emmc and update eeprom

Use command like below to open the file

sudo nano /etc/default/rpi-eeprom-update

Modify as shown below:

FIRMWARE_RELEASE_STATUS="latest"
RPI_EEPROM_USE_FLASHROM=1
CM4_ENABLE_RPI_EEPROM_UPDATE=1

Use Ctrl+x to save the file.

Use command like below to open the file

sudo nano /boot/firmware/config.txt

Modify [cm4] part as shown below:

[cm4]
dtparam=spi=on
dtoverlay=audremap
dtoverlay=spi-gpio40-45

Use Ctrl+x to save the file, and reboot the machine use command:

sudo reboot

Then update the eeprom use command like below:

sudo rpi-eeprom-update -a

The output is like below:

recomputer@reComputer-R100x:~ $ sudo rpi-eeprom-update -a
BOOTLOADER: up to date
   CURRENT: Tue Feb 11 05:00:13 PM UTC 2025 (1739293213)
    LATEST: Tue Feb 11 05:00:13 PM UTC 2025 (1739293213)
   RELEASE: latest (/usr/lib/firmware/raspberrypi/bootloader-2711/latest)
            Use raspi-config to change the release.

  VL805_FW: Using bootloader EEPROM
     VL805: up to date
   CURRENT: 
    LATEST: 

Flash the lastest eeprom and modify the boot order

Use command like below to open the raspi-config:

sudo raspi-config 

Scroll down to Advanced Options and press Enter:

Scroll down to Bootloader Version and press Enter:

And finally choose Latest, and press Enter:

Select No here - you want the latest bootloader.

And exit from the tool by selecting Finish:

If asked to reboot, select Yes.

Then modify the boot order with command like below:

sudo -E rpi-eeprom-config --edit

Modify the file like below:

[all]
BOOT_UART=0
WAKE_ON_GPIO=1
POWER_OFF_ON_HALT=0
BOOT_ORDER=0xf416

Use Ctrl+x to save the file, and then reboot your machine.

Steps for Flashing Raspbian OS

• Step 1. Make sure switch is set to Flash mode according to the diagram below:

Switch Position	Mode	Description	nRPI-BOOT
	Normal mode	Boot from eMMC	Low
	Flash mode	Boot from USB	High

• Step 2. Please use the USB Type-C data cable connect to the Type-C port on the reComputer R1100, as shown in the below image,

• Step 3. Please connect the Power Cord from the power supply to the reComputer R1100 power port.

note

The power solution utilizes a bridge rectifier diode for reverse polarity protection and is compatible with both AC and DC inputs. This ensures that regardless of how the power supply's positive and negative terminals are connected, the circuit will not be damaged. By using a bridge rectifier, the output voltage polarity remains fixed irrespective of the input DC polarity, providing effective reverse polarity protection.

Now let's move on to software set up on your host computer. Please follow the steps according to your desired operating system

For Windows

• Step 1. Download the rpiboot setup installer by click here to install the necessary drivers and the boot tool

• Step 2. Connect reComputer R1100 the PC via USB Type-C cable

Windows will now find the hardware and install the necessary drivers

• Step 3. Search for rpiboot tool that we installed before and open it

• Step 4. Open file explorer and you will see the eMMC of the Computer Module 4 shown as a USB mass storage device

• Step 5. Download Raspberry Pi Imager software from here

• Step 6. Open Raspberry Pi Imager software

• Step 7. Press CTRL + SHIFT + X on the keyboard to open Advanced options window

Here you can set a hostname, enable SSH, set a password, configure wiFi, set locale settings and more

note

The system has preset a username and password. Please set the default username to "recomputer" and the default password to "12345678" when logging in. If you set different credentials and encounter issues, please reflash OS if your purchase the first batch of reComputer R1100.

• Step 8. Click CHOOSE OS and select your preferred OS

NOTE: You can select other OS such as 64-bit Ubuntu by navigating into Other general purpose OS

Or you can use this link to download the image file:

Ubuntun for raspberry-pi

• Step 9. Click CHOOSE STORAGE and select the connected eMMC drive

• Step 10. Finally, click WRITE

Please wait a few minutes until the flashing process is complete.

• Step 11. Flip the Boot Mode switch back to the Normal mode position

Now you can skip to here

For MAC

caution

You need to install homebrew before proceed the following steps. Please open a terminal and type brew -v to check if you have setup the correct homebrew environment, you should see the version of the homebrew environment you have installed.

• Step 1. Clone the usbboot repository

git clone --depth=1 https://github.com/raspberrypi/usbboot
cd usbboot

• Step 2. Install libusb

brew install libusb

• Step 3. Install pkg-config

brew install pkg-config

• Step 4. Build using make

make

• Step 5. Run the binary

sudo ./rpiboot

• Step 6. Connect reComputer R1100 to the your Mac computer via USB Type-C cable

• Step 7. Download and Install Raspberry Pi Imager Application by visiting this link

• Step 8. Open the Raspberry Pi Imager Application

• Step 9. Press CTRL + SHIFT + X on the keyboard to open Advanced options window

Here you can set a hostname, enable SSH, set a password, configure wifi, set locale settings and more

note

The system has preset a username and password. Please set the default username to "recomputer" and the default password to "12345678" when logging in. If you set different credentials and encounter issues, please reflash OS if your purchase the first batch of reComputer R1100.

• Step 10. Click CHOOSE OS and select your preferred OS

NOTE: You can select other OS such as 64-bit Ubuntu by navigating into Other general purpose OS

Or you can use this link to download the image file:

Ubuntun for raspberry-pi

• Step 11. Click CHOOSE STORAGE and select the connected eMMC drive

• Step 12. Finally, click WRITE

Please wait a few minutes until the flashing process is complete.

• Step 13. Flip the Boot Mode switch back to the Normal mode position

Now you can skip to here

For Linux

We will use Git to obtain the rpiboot source code, so make sure Git is installed

• Step 1. Open a Terminal window and type the following to update the packages list

sudo apt-get update

• Step 2. Install Git by the following command

sudo apt install git pkg-config make gcc libusb-1.0-0-dev

• Step 3. Git might produce an error if the date is not set properly. Type the following to correct this

sudo date MMDDhhmm

NOTE: Where MM is the month, DD is the date, and hh and mm are hours and minutes respectively.

• Step 4. Clone the usbboot tool repository

git clone --depth=1 https://github.com/raspberrypi/usbboot
cd usbboot

• Step 5. Build and install the usbboot tool

make

• Step 6. Connect reComputer R1100 to the PC via USB Type-C cable

• Step 7. Run the usbboot tool and it will wait for a connection

sudo ./rpiboot

The result is shown as below:

• Step 8. Download snap

sudo apt install snap

• Step 9. Download rpi-imager

snap install rpi-imager

• Step 10. Open Raspberry Pi Imager software

rpi-imager

The result is shown as below:

• Step 11. Press CTRL + SHIFT + X on the keyboard to open Advanced options window

Set a hostname, set a password, configure wifi, set locale settings

Enable SSH

Here you can set a hostname, enable SSH, set a password, configure wifi, set locale settings and more

note

The system has preset a username and password. Please set the default username to "recomputer" and the default password to "12345678" when logging in. If you set different credentials and encounter issues, please reflash OS if your purchase the first batch of reComputer R1100.

• Step 11. Click CHOOSE OS and select your preferred OS

NOTE: You can select other OS such as 64-bit Ubuntu by navigating into Other general purpose OS

Or you can use this link to download the image file:

Ubuntun for raspberry-pi

• Step 12. Click CHOOSE STORAGE and select the connected eMMC drive

• Step 13. Finally, click NEXT and YES

Please wait a few minutes until the flashing process is complete. The result is shown as below:

• Step 14. Flip the Boot Mode switch back to the Normal mode position

Install Drivers

Access reComputer R1100 via SSH

note

The following steps require some basic Linux command line knowledge, Please prepare yourself a cup of coffee and getting ready.

As following the above flashing OS steps, the reComputer R1100 should have SSH enabled with the hostname of raspberrypi.local.

Now please connect the Ethernet cable to the reComputer R1100 and a router which is on the same network as your host computer.

tip

To test if your reComputer R1100 is on the same network with host computer, you can use ping raspberrypi.local

if you see the following output after the ping command which means both devices are on the same network:

For Windows

• Step 1. Open Command Prompt and type the following

ssh [email protected]

• Step 2. Type yes for the prompt

• Step 3. Enter the password as follows

raspberry

• Step 4. If you have sucessfully logged into the Raspberry Pi OS, you will see the following output

For Mac/Linux

• Step 1. Open Terminal on the computer and type the following

# ssh username@hostname
ssh [email protected]

• Step 2. Type yes for the following message

ECDSA key fingerprint is SHA256:XXXXXXX.
Are you sure you want to continue connecting (yes/no/[fingerprint])?

• Step 3. When it asks for the password, type the following

# password for user
raspberry

• Step 4. If you have sucessfully logged into the Raspberry Pi OS, you will see the following output

Install reComputer R1100 drivers after flashing new Raspbian OS

reComputer R1100 comes with the necessary drivers pre-installed out-of-the-box so you don't need to install any additional drivers. However, if you flash new OS by yourself, you need to install the necessary drivers separately.

tip

For install 32-bit OS driver, Please carefully follow the steps below:

The Operating System that pre-installed on reComputer R1100 is 64-bit, if you wish to install 32-bit OS please use the following method to install the DTS drivers.

Please follow the Access reComputer R1100 via SSH step, and then enter the following command:

echo arm_64bit=0 | sudo tee -a /boot/config.txt

Then continue the Install drivers after flashing new Raspbian OS process

• Step 1. Clone the following repo in the ssh shell you have connected to reComputer R1100 from the above steps

sudo apt install git -y
git clone --depth 1 https://github.com/Seeed-Studio/seeed-linux-dtoverlays

• Step 2. Enter the repo

cd seeed-linux-dtoverlays

• Step 3. Type the following to install the drivers

sudo ./scripts/reTerminal.sh --device reComputer-R100x

• Step 4. Reboot the reComputer R1000

sudo reboot

This process will ensure that your drivers are up to date before updating the firmware.

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