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# Flashing the OS image
!!! warning "Micro-SD Card Requirements"
* Minimum **16 Gb**
* **Class 10** is strongly recommended
## Download the image
Download the appropriate SD card image. Select it based on the board, platform, and the video capture device you are using:
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* **PiKVM V4**
* [PiKVM V4 Mini ](https://files.pikvm.org/images/v4mini-hdmi-rpi4-latest.img.xz ) < sub > - [*sha1* ](https://files.pikvm.org/images/v4mini-hdmi-rpi4-latest.img.xz.sha1 )
* [PiKVM V4 Plus ](https://files.pikvm.org/images/v4plus-hdmi-rpi4-latest.img.xz ) < sub > - [*sha1* ](https://files.pikvm.org/images/v4plus-hdmi-rpi4-latest.img.xz.sha1 )
* **PiKVM V3**
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* [PiKVM V3 HAT BOX Image (Raspberry Pi 4) OLED/FAN preactivated ](https://files.pikvm.org/images/v3-hdmi-rpi4-box-latest.img.xz ) < sub > - [*sha1* ](https://files.pikvm.org/images/v3-hdmi-rpi4-box-latest.img.xz.sha1 )
* [PiKVM V3 HAT DIY Assembly (Raspberry Pi 4) ](https://files.pikvm.org/images/v3-hdmi-rpi4-latest.img.xz ) < sub > - [*sha1* ](https://files.pikvm.org/images/v3-hdmi-rpi4-latest.img.xz.sha1 )</ sub >
* **DIY - Raspberry Pi 4, V2 platform:**
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* [For HDMI-CSI bridge ](https://files.pikvm.org/images/v2-hdmi-rpi4-latest.img.xz ) < sub > - [*sha1* ](https://files.pikvm.org/images/v2-hdmi-rpi4-latest.img.xz.sha1 )</ sub >
* [For HDMI-USB dongle ](https://files.pikvm.org/images/v2-hdmiusb-rpi4-latest.img.xz ) < sub > - [*sha1* ](https://files.pikvm.org/images/v2-hdmiusb-rpi4-latest.img.xz.sha1 )</ sub >
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* **DIY - Raspberry Pi Zero 2 W, V2 platform:**
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* [For HDMI-CSI bridge ](https://files.pikvm.org/images/v2-hdmi-zero2w-latest.img.xz ) < sub > - [*sha1* ](https://files.pikvm.org/images/v2-hdmi-zero2w-latest.img.xz.sha1 )</ sub >
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* **DIY - Raspberry Pi Zero W (legacy), V2 platform:**
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* [For HDMI-CSI bridge ](https://files.pikvm.org/images/v2-hdmi-zerow-latest.img.xz ) < sub > - [*sha1* ](https://files.pikvm.org/images/v2-hdmi-zerow-latest.img.xz.sha1 )</ sub >
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Pre-compiled images are only available for the Raspberry Pi 4 and Zero (2) W. For all other cases, you will need to build the operating system yourself. But don't worry, it's [very simple ](building_os.md ).
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## Flash the image
!!! tip
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Ignore request to format your sd card, this step is not nessessary. Choose the most suitable method for you
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### Using Linux CLI
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Decompress and flash the image. **Be careful when choosing the device path, it may be different on your OS** :
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```
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# xz --decompress v2-hdmi-rpi4-latest.img.xz
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# dd if=v2-hdmi-rpi4-latest.img of=/dev/mmcblkX
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```
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You can also use `dd_rescue` or `ddrescue` .
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!!! warning "Check the advanced settings (CTRL+SHIFT+X), make sure they are blank or the flash will fail"
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### Using RPi Imager (Linux, MacOS and Windows)
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1. Download and install **the latest version** of [RPi Imager ](https://github.com/raspberrypi/rpi-imager/releases ).
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2. Run RPi Imager:
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< img src = "imager-1.jpg" width = "400" / >
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3. Press **CHOOSE OS** and select **Use custom** image at bottom of the list:
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< img src = "imager-2.jpg" width = "400" / >
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4. After clicking on this item, select the image file (`.img.xz`), then click **CHOOSE STORAGE** :
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< img src = "imager-3.jpg" width = "400" / >
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5. Insert the memory card into the card reader. Choose the card reader from this list. **Be careful** and choose the right device:
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< img src = "imager-4.jpg" width = "400" / >
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6. After choosing the memory card, press the **WRITE** button. Confirm the operation when you are asked about it:
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< img src = "imager-5.jpg" width = "400" / >
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7. Wait for the process to finish. Get yourself a coffee or do some stretching :)
!!! tip
The process may hang at 99% for a long time, this is okay, just wait for it to complete
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< img src = "imager-6.jpg" width = "400" / >
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8. Remove the memory card after successful completion:
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< img src = "imager-7.jpg" width = "400" / >
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!!! tip
If an error occurs during flashing or booting PiKVM, repeat the process.
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!!! warning "If you encounter errors after flashing, reflash or use a different SD card."
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When you have completed these steps, please move to the [First Steps doc. ](https://docs.pikvm.org/first_steps/ )
