Then I tried to use Seatools to run the SMART check, short/long DST, short/long generic, and the SMART check passed but not the short/long DST/generic tests. In fact I could access the data, copy them out, copy data in, access, apparently no issues. After I've followed the first post to fix my hard disk (by isolating PCB/HDA, then issue commands spin down, up, F3 T>i4,1,22 then power cycle, then m0,2,2,22) - I've also updated the firmware to SD1A, formatted it in Windows, and ran a checkdisk/surface scan. Ok, something new I've found out - maybe the rest of you can check/test.
I believe on my speciffic model of hdd that ic was for the head, not the motor. by my own experience, when I isolated the motor I was still unable to bring back my drive when I removed the pcb I observed there was an ic on the base of the hdd that matched a contact on the pcb (I would take a pic and upload but I am now using the drive and don't want to take it apart and risk any problems)- I was able to proceed and sucessfully recover my hdd by using the original method outlined in post #1 with the pcb off. Ok gradius explained there is a command that comes from the head that locks up the sata terminal. Why do they fight like that ? The only result of all this will be in people's mind : "DO NOT TRUST DATA RECOVERY COMPANIES, THEY'LL TRY TO FOOL YOU IN SAYING THAT THE COMPETITOR IS LYING". It's impossible to get the truth between 2 people whose words to each other are insults and "you are all wrong". The aviko one, taking in account only the commands, seems to be less disruptive, but I really don't know which part should be isolated, motor or heads. The 2 solutions are nearly identical, but the differences are not only the ones you list : one isolates the heads, one the motor, and that is pretty much a difference. I tried to contact seagate for 10 days, and got anything but professional responses (I have a ton of seagates drives, those guys just don't want to keep their customers, one day they will pay for that). I have 2 drives bricked : one 7200.11 and one ES.2
He also added other commands for testing purposes only (F712,F,22). Don't be confused, the only difference is that Aviko removed the command i4,1,22 because, as he explained, it isn't essential and it can damage data on the drive in some cases. A noticeable thing is that, now, Gradius and Aviko solutions are quite the same.
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