yup , the other times i try to connect the blackcat and when i got multiples ids from the chip , the led was off on the target device .
IF user is doing an spi extraction on the chip only (without be connected to the main circuit) , then there is not need for external supply , but if the user i reading the chip inside the main router , then an external power supply is needed , because blackcat is unable to feed the whole circuit where the chip are , or at least the components connected to that chip pin .
Basically what happens is that without the external power supply and with the limited current of blackcat , the 3,3v goes down to 1V , and this is why i got those errors .
However , i had to put GND in parallel between power supplies , so blackcat could get the signals properly .
Without the GND connected in parallel with blackcat , then blackcat was unable to understand the data retrieved because it was not from its GND .
I did already this operation before , and i believe i asked some help from you , i tough i had the firmware stored here , but since i installed W7 64bit 2 months ago i problably deleted by mistake the last firmware extracted .
I am leaving all the details i did not on my posts , in case i need them in future .
This way , i just need to get here and follow the procedures i wrote here .
Last time i did not mention the version of the software and that GND only connection , this is why i took so much time to get it working again .