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Unknown Netbook fake Vaio N450 Jmicron Lan Slic none
#31
so i woke up today and started to think of the LPT parallel cable SPI flash for which ? hmm W25X80 (001200EF) and MX25l800 (001300C2)
http://mondotech.blogspot.com/2009/05/as...flash.html
and
http://richard-burke.dyndns.org/wordpres...-p5b-bios/
i have the cable and the technology.. just not the experience (i went to I.T.T. tech in 1993 for electronics eng .. yeah i never finished it)

one interesting note i found in comments is

Everett says:
August 20, 2010 at 10:15 am

This tutorial was a huge help although I had a different chip that threw in a few changes. In case you’re reading this and you have to flash a Macronix chip, here are some tips.

1. Manf. datasheet was very helpful… find it and use it. Here’s the one I had.
http://www.mct.net/download/macronix/mx25l8005.pdf

2. remember HOLD# pin and WE# pin must be tied high for the chip to be recognized

3. Use FlashROM, it’s a much more robust program. I got a bad flash using SPIPGM (or SPIPGM2) that I believe was due to the speed of the programming. The name of the Rayer programmer in the command line is “rayer_bitbang_isp”

I didn’t time the programming, but I believe it was even faster than the Rayer code despite warnings of slow programming on his site.

http://khepri.coresystems.de/~idwer/flashrom/
http://www.flashrom.org/Flashrom

4. CWSDPMI link is dead on the Rayer page… use this one or google it because it is required.
http://homer.rice.edu/~sandmann/cwsdpmi/index.html
find
quote
#32
ok i finaly opened it again and found w25x80avsig but no sign of mx25L800 anywhere so now im soldering leads to it.
my final question is .. which file should i use.. the devel35p.rom or the flashabl.rom ?? bahh im going to flash the slic 2.1 for it.

im glad my sister has a desktop so shes not in a hurry for her portable.
find
quote
#33
ok no go with lpt method..spipgm2 seems it cant even identify it so something wasnt right.
i checked the dang cables 2 times and still no go.
i might just desolder it and take it to a xbox modder to flash the bios in it.

EEDIT: found mistake in the cable.. used wrong value resistors .
also found this chip has to be removed from mainboard ..weird. but true see post bellow by someone.

"The mainboard have an SPI flash W25X80A, my SF100+testchip SO08 can detect the flash type, but can not erase the flash correctly. After contacted with dediprog engineer. i remove the flash from the board, it seems fine, the programming is fine, but i can not use it with the mainboard unless i can bear removing the flash chip every time i need to rebuild the coreboot. After that, i replace that flash chip with an sst 080b."
find
quote
#34
got it to flash with spipgmw and cmos batt and 22uf cap and 147 ohm for lpt. think i need more ohm like 220 for stable data stream.
bad news is i have damaged a trace by bios on pcb. friend is fixing it.
i tried contacting soltech for a mobo.. no answer.
find
quote


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