[quote="Mijzelf"][quote="Qesc"]Please tell me now how can I know if the SoC is fried? And if it's true, in that case, is my ix4 dead?[/quote]I don't think the whole SoC is fried, as you seem to get data from it. The only way to know if the RX pin is fried, is to connect a TTL level serial cable, and see if the box receives commands.
Assuming the RX pin is fried, it depends on why it doesn't boot if the box is (technically) dead. Without the RX pin, you can't use the bootloader to flash a new kernel/initrd, so you're dependent on what you have. If the current kernel doesn't boot [i]and[/i] the RX pin is dead, the box is technically dead. Unless you can get JTAG working, and that is more complex than getting serial working. (More pins, hard to find without hardware documentation)[/quote]
Ok here is what happened on my box :
- I got it in a condition that the array was broken, so I connected to it by lenovo software, and formatted the 4 hard disks;
- then the booting of the box was fixed at 75%, I've had no idea that was the reconstruction of the new array, which supposed to be very slow, so I made a bad decision that to flash the firmware;
- I found the guide in the forum, which leads me to the famous interface"USB and ETHERNET" , and I flashed my box with a "Cloud edition" firmware , after that, the box became "rebooting constantly"
- then I tried to debrick it by using a system ready hard disk, but not worked, in that case, I want to see the boot log via serial,
In conclusion, I think the bootloader was broken Koz I flashed a no suitable firmware, so if the RX is fried, that will be say my box is dead!
Except you told me the JTAG is still working, and here @maozip said he has succeeded to flash the kernel via JTAG, so maybe I still have same hope!?