Hello Sandeep,
I hope all is great with you.
In comparison to the FS24 device, the FS26 offers more features. I mean, the number of power supplies, the number of wake up inputs, the register mapping or even the pinout or the package type.
As a brief, the FS24 is not a direct replacement for the FS26 device, and a lot of differences need to be considered when developing SW for it. For further information, please download the corresponding datasheets from your Secure Files.
I personally do not think that the AUTOSAR driver is available for the FS24 as it is still in preproduction status. Please let me know if you require further information in order to request it.
I hope this information helps.
Regards,
David