s3c6410 the eboot, you can upgrade via sd card, we can refer to

Eboot.SDFuser\BLCOMMON\BLCOMMON\makefile
.............\........\........\obj\ARMV4I\retail\blcommon.obj
.............\........\........\...\......\......\format.obj
.............\........\........\...\......\......\signimage.obj
.............\........\........\...\......\......\tmp.txt
.............\........\........\...\......\......\_objects.mac
.............\........\........\sources
.............\........\blcommon.c
.............\........\BLCOMMON_SECURE\makefile
.............\........\...............\obj\ARMV4I\retail\blcommon.obj
.............\........\...............\...\......\......\format.obj
.............\........\...............\...\......\......\signimage.obj
.............\........\...............\...\......\......\_objects.mac
.............\........\...............\sources
.............\........\dirs
.............\........\format.c
.............\........\signimage.c
.............\Build.err
.............\Build.log
.............\Build.wrn
.............\dirs
.............\EBoot\Build.err
.............\.....\Build.log
.............\.....\Build.wrn
.............\.....\cs8900dbg.h
.............\.....\debug.c
.............\.....\eboot.bib
.............\.....\ether.c
.............\.....\flash.c
.............\.....\InitialImage_rgb16_320x240.h
.............\.....\InitialImage_rgb24_800x480.h
.............\.....\loader.h
.............\.....\main.c
.............\.....\makefile
.............\.....\makefile.inc
.............\.....\nand.cpp
.............\.....\obj\ARMV4I\retail\debug.obj
.............\.....\...\......\......\ether.obj
.............\.....\...\......\......\flash.obj
.............\.....\...\......\......\main.obj
.............\.....\...\......\......\nand.obj
.............\.....\...\......\......\SDInterface.obj
.............\.....\...\......\......\startup.obj
.............\.....\...\......\......\usb.obj
.............\.....\...\......\......\usbs.obj
.............\.....\...\......\......\_objects.mac
.............\.....\SDInterface.c
.............\.....\sources
.............\.....\startup.s
.............\.....\usb.c
.............\.....\usb.h
.............\.....\usbs.s
.............\FAT_LIB\FAT_LIB.lib
.............\SDMMC_LIB\Build.log
.............\.........\HSMMCDRV.c
.............\.........\HSMMCDRV.h
.............\.........\makefile
.............\.........\MMCCopy.s
.............\.........\obj\ARMV4I\retail\HSMMCDRV.obj
.............\.........\...\......\......\MMCCopy.obj
.............\.........\...\......\......\_objects.mac
.............\.........\sources
.............\BLCOMMON\BLCOMMON\obj\ARMV4I\retail
.............\........\........_SECURE\obj\ARMV4I\retail
.............\........\........\obj\ARMV4I
.............\........\........_SECURE\obj\ARMV4I
.............\EBoot\obj\ARMV4I\retail
.............\SDMMC_LIB\obj\ARMV4I\retail
.............\BLCOMMON\BLCOMMON\obj
.............\........\........_SECURE\obj
.............\EBoot\obj\ARMV4I
.............\SDMMC_LIB\obj\ARMV4I
.............\BLCOMMON\BLCOMMON
.............\........\BLCOMMON_SECURE
.............\EBoot\FAT_LIB
.............\.....\obj
.............\SDMMC_LIB\obj
.............\BLCOMMON
.............\EBoot
.............\FAT_LIB
.............\SDMMC_LIB
Eboot.SDFuser

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