Hello

Some time when you use a clone PCB you have to Transfer the Firmware from the main chip or switch the main chip tot the clone PCB
How can i now when i have to switch the chip to the clone PCB or do the Firmware Transfer.

And whats the name of the tool to do the Firmware Transfer
And how i no when the main chip is the bios

Greetz

Depends on the type of PCB and the tools you have available. To get more clues, post pictures of your PCB from both sides!

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Hard Disk Drive (HDD), Solid State Drive (SSD, SATA, NVMe, etc), USB Flash Drive and RAID Data Recovery Specialist in Massachusetts

wat is het merk en model harddisk?

Whats the brand and model of the harddisk?

Dobre

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Murphy was an optimist

Datarecovery in Belgium, Holland, France and Germany
Datarecoverytools http://www.drtools.eu

The question was to learn
There is no problem with a PCB

Greetz

Best thing you can do is go read a bunch of old threads then, imo.

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You don't have to backup all of your files, just the ones you want to keep.

I'm not a data recovery guy, but my understanding is that Samsungs usually don't need a firmware transfer, if the board is a good match.

Hitachis require that you move the NVRAM chip, but not the serial flash, as long as the firmware is matched.

Current Seagates, Maxtors, and WD's all have adaptive information that needs to be transferred.

Maxtors prior to the Seagate acquisition were OK with a straight board swap.

Professional tools such as PC3000 and Salvation Data's HD Doctor can save and restore the EEPROM data, as long as the board has at least some sanity. Otherwise you can use a chip programmer, either in-circuit, or after desoldering the chip.

See read-write-serial-flash-wdc-logic-boards-t7192.html

To help you identify the NVRAM, serial flash, parallel flash, EEPROM, ROM chips, you could consult my HDD IC database:
http://www.users.on.net/~fzabkar/HDD/HDD_ICs.txt

WD usually assigns a circuit location with a U12 reference for the "ROMs". If this location is unpopulated, then the ROM data will be internal to the MCU.

If you still can't identify the ROM, then look for an isolated 8-pin chip. Follow its signal traces. If they lead back to the MCU, then it is probably a ROM. Otherwise, if the chip is near a coil or diode, then it is probably the MOSFET or FETKY in a switchmode DC-DC converter, in which case its signal traces will lead to the motor controller chip (eg SMOOTH).

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A backup a day keeps DR away.