# PiDog Raspberry OS version to use? **URL:** \ **Category:** Robotic kit for Raspberry Pi\ **Created:** [December 31, 2024, 11:08pm UTC](https://forum.sunfounder.com/t/pidog-raspberry-os-version-to-use/2255 "2024-12-31T23:08:24Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![MrSteve](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/mrsteve/32/1175_2.png) [@MrSteve](https://forum.sunfounder.com/u/MrSteve)\ **Post date:** [December 31, 2024, 11:08pm UTC](https://forum.sunfounder.com/t/pidog-raspberry-os-version-to-use/2255/1 "2024-12-31T23:08:24Z")
Hi, I am struggling to identify the raspberry OS version to use for the PiDog build. In the vdeo it shows a very old Pi Imager software and selects legacy OS! Can anybody clarify this for me? It seems odd to use a a 32bit legacy build on 64bit Pi 4 in 2025. Happy new year by the way. 🕶 ---
**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\ **Post date:** [January 2, 2025, 7:14am UTC](https://forum.sunfounder.com/t/pidog-raspberry-os-version-to-use/2255/2 "2025-01-02T07:14:56Z")
pidog is compatible with legacy and bookworm versions. The video shows the installation of legacy system, it is a video we made earlier, now the system is constantly being updated, you can just choose the latest system to install. The video is an example, in order for the user to know how to install the system. We recommend that you use the new bookworm version of the system. (as shown in the picture) ![image1.22](https://canada1.discourse-cdn.com/flex029/uploads/sunfounder/original/2X/a/a6b0667aaed103aea845420ab3b4dfe18307993d.png) ---
**Author:** ![MrSteve](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.sunfounder.com/mrsteve/32/1175_2.png) [@MrSteve](https://forum.sunfounder.com/u/MrSteve)\ **Post date:** [January 3, 2025, 9:03am UTC](https://forum.sunfounder.com/t/pidog-raspberry-os-version-to-use/2255/3 "2025-01-03T09:03:17Z")
Thank you, that has cleared up my doubts.