旧バージョンは下記からDownlodできます。
32Bit Raspberry PI OS
https://downloads.raspberrypi.org/raspios_armhf/
64Bit Raspberry PI OS
https://downloads.raspberrypi.org/raspios_arm64/
32Bit Old Raspbian
https://downloads.raspberrypi.org/raspbian/images
| Linux 6.6 | Raspberry Pi OS/2024-03-12～ |
| Linux 6.1 | Raspberry Pi OS/2023-03-18～ Raspberry Pi OS/202 |
| Linux 5.15 | Raspberry Pi OS/2022-04-04～Raspberry Pi OS/2023-02 |
| Linux 5.10 | Raspberry Pi OS/2021-03-04～Raspberry Pi OS/2022-01 |
| Linux 5.4 | Raspberry Pi OS/2020-08-20～Raspberry Pi OS/2021-01 |
| Linux 4.19 | Raspbian/2019-06-20～Raspberry Pi OS/2020-02-14 |