Hi Seraphina, could you double check? The files in the archive are dated August 2023 and the readable files have the same content.
Also the Image is the same as A603-Orin-NX-Nano-JP5.1.2.zip
gorgo@razer:/home/gorgo/ORIN_RT_5_1_2/Drivers/A603-Orin-NX-Nano-JP5.1.2/Linux_for_Tegra/kernel$ diff Image ~/Downloads/603_jp512-2402/603_jp512/Linux_for_Tegra/kernel/Image
[No output == No differ]