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DCH 5200P не загружает прошивку

Помогите, ресивер pbi 5200p завис на инициализации, не пингуется.

прошивка была 5210PR0016 обновлял до 5210PR0018
С инструкцией от 5000p не подключается по rs-232.

Подскажите как восстановить с ним связь?

Можно ли как-то сбросить прошивку на заводские или как подключиться к нему через com-port?

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подключился по rs-232,

Board: STx7105-PDK  [32-bit mode]


U-Boot 1.3.1 (Jun  2 2011 - 18:42:20) - stm23_0051

DRAM:  256 MiB
NOR:    64 MiB
NAND:  No NAND device found!!!
  0 KiB
SPI:  ERROR: Unknown SPI Device detected, status = 0xff
In:    serial
Out:   serial
Err:   serial
Hit any key to stop autoboot:  0
## Booting image at a0060000 ...
   Image Name:   Linux 2.6
   Image Type:   SuperH Linux Kernel Image (gzip compressed)
   Data Size:    1888316 Bytes =   1.8 MiB
   Load Address: 80800000
   Entry Point:  80801000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK

каким образом залить прошивку теперь? как запустить процесс upgrade?

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То же самое на PBI 3100p...

U-Boot 1.3.1 (Apr  6 2011 - 17:56:44) - stm23_0051

DRAM:  256 MiB
NOR:    16 MiB
NAND:  No NAND device found!!!
  0 KiB
SPI:  ERROR: Unknown SPI Device detected, status = 0xff
In:    serial
Out:   serial
Err:   serial
Hit any key to stop autoboot:  0
## Booting image at a0060000 ...
   Image Name:   Linux 2.6
   Image Type:   SuperH Linux Kernel Image (gzip compressed)
   Data Size:    1987468 Bytes =   1.9 MiB
   Load Address: 80800000
   Entry Point:  80801000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK
 

На enter при "Hit any key to stop autoboot" не реагирует.

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