请使用过USB转TTL线，升级过的朋友说下怎么备份中九原始BIN，
我试用了几个 GxDownloaderIII 1.0X的版本，不能备份原始BIN，所以也不敢升级。
备份的时候，没有精度，备份0字节
使用SecureCRT，看上去应该连到中九了
国芯PCB_3001+5810C 十芯面板，高频芯片是RDA5812 中九机 ZY5188_AG 看团圆
国芯PCB_3001+5812FD 六芯面板，高频芯片是RDA5812 中九机 ZY5188_AG 至尊王牌
______两台中九机
靠近S端子边起依次为1、地线(0V)，2、RX(3.3V)，3、TX(3.3V)，4、VCC(3.3V) （四针接口）
___________________________________________________________
USB转TTL线，安装好XP驱动后，硬件信息是COM3
______________SecureCRT连看到中九启动过程________________________
[valid code in serial flash]
FD620K1_KeyBoardLed_Init
FD620K1_KeyBoardLed_SetDispData[Enter the flash init]
==step1==
[init]____check sysdb, ok
==step2==
step2: no force key
step2: download_flag == 0, entry step3
==step3==
step3: flash head crc pass, entry step4
==step4==
step4: load zip app soft
step4: app soft crc pass, #normal start#
Uncompressing begin...
....................................................
Done, booting the app soft.
GXAUDIO_PT8211
GX1121 V1.77 Build20090915
[RF]____rda5812
[REMOTE]GX_REMOTE_ZHUOYI
[Dbase] Initial SysDbase ...OK!
[Dbase] UsrDbase Initialize...Ok!
[Dbase] UsrDbase Loading...Ok!
[Dbase] UsrDbase querying...
[Dbase] Current Status: Total:65536, Used:8300, Frag:168
[init]____panel OK zhuoyi fd620__________
###0x40004038 = 0x23c00,0x4000403c = 0xcb###
[ STB_APP ] eit START
[STB_APP] reserve gxapp_set_current_service_id:current_service_id=0x3ea
[AV] Play channel_num=01000002, service_id=0x3ea,service_name=CCTV_2
[Tuner] frequency=11880, polar=0, symbol_rate=28800
[AV]volume_db :20,offset:+0
[AV] pcr_pid=0x83e
[AV] video_pid=0x83e
[AV] audio_pid=0x83f
[Tuner] Lost!! freq=11880,QAM=0,Sym/s=28800
0xa1 == 0x33
chTpSel == 1
[Tuner] frequency=11880, polar=0, symbol_rate=28800
[Tuner] Lost!! freq=11880,QAM=0,Sym/s=28800
[Tuner] Lost!! freq=11880,QAM=0,Sym/s=28800
0xa1 == 0x33
[Tuner] Lost!! freq=11880,QAM=0,Sym/s=28800
[Dbase] Default Data Loading...
[Dbase] UsrDbase reset to factory set...
[Dbase] UsrDbase default data Loading...
[Dbase] regsiter node type...OK!
[Dbase] initialize time_node...OK!
[Dbase] Initialize frequency parameters...OK!
[Tuner] frequency=11880, polar=0, symbol_rate=28800
[Tuner] Lost!! freq=11880,QAM=0,Sym/s=28800
0xa1 == 0x33
[Tuner] Lost!! freq=11880,QAM=0,Sym/s=28800
0xa1 == 0x33
[Tuner] Lost!! freq=11880,QAM=0,Sym/s=28800
0xa1 == 0x33
[Tuner] Lost!! freq=11880,QAM=0,Sym/s=28800
0xa1 == 0x33
