You're trying to flash a Studio 1735 BIOS on a Studio 1737 board -- the two systems, though the boards will interchange in the chassis, do not use the same BIOS.

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If you've purchased a 1737 board, the link above is for the BIOS update for it.

Hi,

  I tried before the 1737_A09 before it shows:

   "Machine information not detected!!"

It sounds like you need to contact the seller from whom you purchased the board - if you thought you received a 1737 board, you didn't - -if the BIOS is A05 it's a 1735 and it sounds like it updated already.

How can I check if is it a 1735's main board?

Isn't other way to update the bios?

It sounds like you've confirmed you're running A05, which is the latest BIOS for the 1735, so you do have a 1735 mainboard.

The problem likely is that you had a 1737 (newer board with newer CPU support) and replaced it with an older 1735 board -- you'll need to see if your board supplier will allow you to return the board for a true 1737 board.

If I have a 1735 main's board and I would like to update it since the bios version is A01.

When I execute the programa 1735_A05 it shows:

Error! The BIOS update could not be performed
because a valid ROM image file could not be found.

What am I missing?

The laptop works normally the only problem is I have to press F1 after turning On. I got this main board last year just this month I replaced, it will cost to much trying to replace it.

What is the model of CPU installed (i.e., Intel 7250, etc.), and which operating system and version (32- or 64-bit) is on the hard drive?

Hi,

  I'm using Windows 7 64 bits, Intel(R) Core(TM)2 Duo T6400, 4Gb RAM.

  The hard driver is WDC WD32000BEVT-75ZCT2 ATA Device.

Best Regards,
Guilherme

If you're already on the latest BIOS update  no -- there's nothing more you can do short of changing the system board to a newer one from a -37 model.