如何减小编译生成的ipnc_rdk_fw_m3vpss.xem3的大小

在IPNC_RDK_GA_Release3.5.0自带的文件系统中，ipnc_rdk_fw_m3vpss.xem3的大小为4M多，
将Rules.make改为如下配置后进行编译，生成的ipnc_rdk_fw_m3vpss.xem3大小为16M多，
请问可否使生成的ipnc_rdk_fw_m3vpss.xem3大小变小啊？

SYSTEM_PLATFORM  := IPNC
#SYSTEM_PLATFORM  := EVM

# Build configuration
#APP_BUILD_CFG    := debug
APP_BUILD_CFG   := release

# Binary to boot from NAND or SDCARD
BINARY_MODE    := nand
#BINARY_MODE    := sd                                                                                  

# Values are "DM385" and "DM812x"                                                
#IPNC_DEVICE    := DM385                                                         
IPNC_DEVICE    := DM812x

# Values are "LOW_POWER" and "FULL_FEATURE" 
IPNC_CONFIG := FULL_FEATURE  
#IPNC_CONFIG := LOW_POWER                                                                                                                                          

# Memory foot print                                                              
#MEMORY_CONFIG := 256MB                                                          
MEMORY_CONFIG := 512MB 

# UBIFS mtd-utils mode                                                           
#MTD_UTILS_MODE := 64bit                                                         
MTD_UTILS_MODE := 32bit