Hi , i am trying to jtag this device without success using jtag , it says that was unable to find a connected device .
I believe that the problem is that the CPU is not supported .
I created a thread on openwrt specifically with the tech details of this ONT .
I want to jtag this device because my ISP disabled manual reset on it .
the device pictures : https://forum.openwrt.org/viewtopic.php?id=63703
The CPU this device is using is an : SD5115SRQIV110 by hisilicon (former huawei)
I am using this configuration on jtag :
10 Pin Header
Found in many Huawei routers:
1 - TCK
2-GND
3 -TDO
4 -VREF
5 -TMS
6- nSRST
8 -nTRST
9 -TDI
10- GND
Config taken from : https://wiki.openwrt.org/doc/hardware/port.jtag
Until now i could not get any success , i was hoping to find a serial port on this device , but i am not sure that J8 have anything related to serial communications port .
I maybe have to take out the shield from the ont converter side to see what is there .
Any ideas how to solve this issue ?
More pictures :
I was able to do an SPI extraction , and i am able to decompile some parts from the binarry file , but i am unable to change the bin file and reprogram the Rom without damaging the device .
It wont work .
I believe that the problem is that the CPU is not supported .
I created a thread on openwrt specifically with the tech details of this ONT .
I want to jtag this device because my ISP disabled manual reset on it .
the device pictures : https://forum.openwrt.org/viewtopic.php?id=63703
The CPU this device is using is an : SD5115SRQIV110 by hisilicon (former huawei)
I am using this configuration on jtag :
10 Pin Header
Found in many Huawei routers:
1 - TCK
2-GND
3 -TDO
4 -VREF
5 -TMS
6- nSRST
8 -nTRST
9 -TDI
10- GND
Config taken from : https://wiki.openwrt.org/doc/hardware/port.jtag
Until now i could not get any success , i was hoping to find a serial port on this device , but i am not sure that J8 have anything related to serial communications port .
I maybe have to take out the shield from the ont converter side to see what is there .
Any ideas how to solve this issue ?
More pictures :
I was able to do an SPI extraction , and i am able to decompile some parts from the binarry file , but i am unable to change the bin file and reprogram the Rom without damaging the device .
It wont work .