Hi Charudatta,
It is not recommended to install S32K1 SDK 4.0.x in S32DS v3.5 or v3.6. According to the currently available information, we don’t have any plan to integrate S32SDK S32K1XX 4.0.x into S32DS 3.5 or above version.
However I recommend you to use the latest S32K1 RTD. The old SDK will not be updated to fix bugs.
Please click K1 FRDM Bundle from Application Code Hub. And follow the section 4. Installation Steps of FRDM_Installation_Guide_2026_03.pdf

Best Regards,
Robin
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