GX3001+GX1121+rda5812,用GxUpdate 2.3.5可读出的信息，但GxDownloaderIII_V1.008备份不了。 [复制链接]

本人机子GX3001+GX1121+rda5812，升级口只在三针，分别为TX,RX,GND，直连电脑com口，用GxDownloaderIII_V1.008工具备份不了，设置都是按照教程上的：chip type:GX3001 ,Xtal:4MHZ ,Flash interface: SPI-Flash ,Section :sysdb或key .先点dump，再开机顶盒电源，进度条没有显示进度，只是进度条上英文显示：send bootload bin   。


如果用卓异的升级工具GxUpdate 2.3.5 for ZhuoYi 有反应，机顶盒通电后能读出数据，如下：
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
[valid code in serial flash]


[start]panel OK jiademei

[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 V1.73 Build20090625



[RF]--rda5812



[REMOTE] STD

[Dbase] Initial SysDbase ...OK!

[Dbase] UsrDbase Initialize...Ok!

[Dbase] UsrDbase Loading...Ok!

[Dbase] UsrDbase querying...

[Dbase] Current Status: Total:65536, Used:2464, Frag:168

[init]--panel OK jiademei

###0x40004038 = 0x23c00,0x4000403c = 0xcb###

[ STB_APP ] eit START



[STB_APP] reserve gxapp_set_current_service_id:current_service_id=0x3e9

[AV] Play channel_num=01000001, service_id=0x3e9,service_name=CCTV-1

[Tuner] frequency=11880, polar=0, symbol_rate=28800

[AV]volume_db :25,offset:+0

[AV] pcr_pid=0x834

[AV] video_pid=0x834

[AV] audio_pid=0x835

[Tuner] Lost!! freq=11880,QAM=0,Sym/s=28800

^_^ R[1] KeyValue == 65554     i == 0



[STB_APP] gxapp_set_current_service_id:current_service_id=0x3eb

[AV] Play channel_num=01000002, service_id=0x3eb,service_name=CCTV-7

[AV]volume_db :25,offset:+0

[AV] pcr_pid=0x848

[AV] video_pid=0x848

[AV] audio_pid=0x849

[Tuner] Lost!! freq=11880,QAM=0,Sym/s=28800
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝


可以看到读出了GX1121和rda5812等信息，但为什么用GxDownloaderIII_V1.008工具备份不了，没有反应，请高人指点。