CC2540 256kb migrate to 128kb : osal_snv issue

Hello,

I'm using a cc2540 256kb custom board running BLE stack 1.4 and now, i need to migrate to a cc2540 128kb. Everything works fine except for the osal_snv functions.

Here is one simple test i tried to do, but neither the write or read function return SUCCESS :

void ProjectFunction_Init( uint8 task_id ){

//init gap, ports, etc...

while(1){
  if(osal_snv_write(0x80, 6*sizeof(int8), buff1) ==SUCCESS){ 
    //code
  }
  if(osal_snv_read(0x80,6*sizeof(int8), buff2)== SUCCESS){
    buff2[1]=buff2[1]+1;
  }

}

So, i'd like to know if my project configs (using IAR) are correct, since i don't know where else my issue could be.
Here are the configs :

General Options->Target : CC2540F128  and Number of virtual register : 12 (instead of 16 since it can't work an other way using IAR)

C Compiler->Preprocessor :

                         INT_HEAP_LEN=3072
                         HALNODEBUG
                         HAL_BOARD_128
                         OSAL_CBTIMER_NUM_TASKS=1
                         HAL_AES_DMA=TRUE
                         HAL_DMA=TRUE
                         POWER_SAVING
                         CC2540_MINIDK

Linker->Config : $PROJ_DIR$\..\..\common\cc2540\ti_51ew_cc2540f128b.xcl
Debugger->Setup : $TOOLKIT_DIR$\config\devices\Texas Instruments\ioCC2540F128.ddf

I tried the same test with the SimpleBlePeripheral 128kb project but only the read function worked so far.

BR,

HrH Gui