new flash ic replace

[fabio14789]

I damaged the flash chip while trying to change the Dreamcast's region.
I bought a 29LV002TC-90PTN chip and programmed the `flash.bin` file onto it using a TL866CS, but it doesn't work... it seems I need a 256KB dump from the original chip.
The Dreamcast won't read discs, so I can't flash it via the console itself.
Any tips?

[SWAT]

Dump is 128KB and you can find it in DreamShell firmwares. You will have to flash it with a programmer.

[fabio14789]

I compared the `dcus_ntsc.bin` flash file from DreamShell... it was identical... the difference is that the backup I burned ended up being 256 KB in size, with data extending beyond the 128 KB mark—the remaining blocks contained only `ffffffff`. I burned it correctly, but the Dreamcast logo appears as a black spiral...
My Dreamcast's flash chip is a 29LV008B, and the motherboard is a VA1... I bought a 29LV002TC chip that is supposed to be compatible with the VA1 Dreamcast... could it be a different revision that requires the 29LV008B?

[SWAT]

Maybe you did not flash the block with factory settings (first 8KB), since it is write-protected on chip by default.

[fabio14789]

(Сегодня 19:52)SWAT писал(а):  Maybe you did not flash the block with factory settings (first 8KB), since it is write-protected on chip by default.

I'm using a TL866CS... I programmed it using the default starting address... do I need to program it starting from a specific line?