@ola_gook ,
S32K344 allows to use internal flash for Fee. As User manual of Fls module in Release RTD AUTOSAR Ver 1.0.0:
cuongnguyenphu_0-1650270561078.png
So, it's possible to use FEE with internal Flash.
cuongnguyenphu_1-1650270806493.png
cuongnguyenphu_2-1650270814489.png
For Fee example for S32K3, you can update your S32DS SW to latest version, which is installed S32K3XX development package and S32K3 RTD Autosar 4.4 includes:
cuongnguyenphu_3-1650270924490.png
Then you can find Fee example for S32K344 and S32K312 included
cuongnguyenphu_4-1650271038856.png
Please note that select Fls channel is FLS Hardware channel is 'FLS_CH_INTERN' to use internal flash config
cuongnguyenphu_5-1650271133219.png
Later, in configuration of FEE module, select the corresponding Fls sector defined previously in Fls
cuongnguyenphu_6-1650271277414.png