Help with Jtag

[Skytuga]

I have two NB501, one good (mine) and other bad (entirely
blocked) from a friend that i tried to fix with Jtag and software JKeys D2 without success. The Jkeys doesn't reconise the flash. Than i tried this:

I used my own Neotion 501 to do a firmware dump with Jkeys. Than i turn off the Jtag from my NB501, after turn off from power.. link the Jtag in the block NB501 and turn on in power. I do the ERASE.. after that I do the PROGRAM but appears the message that I leave you in images. Even though I say YES and continues, when is going to send the DUMP i saved from my NB501, begins to give errors and sends nothing. I ask, what more I will be able to try to do? I'm waiting for suggestions.
Thanks to all.

 

[jimihendrix]

I have two NB501, one good (mine) and other bad (entirely
blocked) from a friend that i tried to fix with Jtag and software JKeys D2 without success. The Jkeys doesn't reconise the flash. Than i tried this:

I used my own Neotion 501 to do a firmware dump with Jkeys. Than i turn off the Jtag from my NB501, after turn off from power.. link the Jtag in the block NB501 and turn on in power. I do the ERASE.. after that I do the PROGRAM but appears the message that I leave you in images. Even though I say YES and continues, when is going to send the DUMP i saved from my NB501, begins to give errors and sends nothing. I ask, what more I will be able to try to do? I'm waiting for suggestions.
Thanks to all.

You might try power up the good receiver then connect to the faulty receiver using a null modem cable now switch on the power to the faulty receiver. It might just work.

 

[Skytuga]

I solved the problem with a trick in the jtag (see first image) and another Jkeys. Afterwards I followed the following steps (see second image) than the jkeys recognized the flash.
Finally it was to do normal steps .. ERASE the flash and after PROGRAM the flash with new firmware. Thanks to friend cmds87 to have helped me.