Bad flash please help!!

Hot-swapping and Boot-Block flash & Boot block flash and floppy support
NickS
BIOS Bodhisattva
Posts: 3145
Joined: Fri May 03, 2002 10:34 am
Location: Thames Valley, UK

If you're going to do it, definitely change the jumper. Note: I'm not an EEPROM specialist and Rainbow has said that for some devices the programming voltage needs to be present on boot - maybe this is just when updating ESCD, I don't know. So I would change the jumper to 5v with the power off but if your friend's machine then fails to boot, change it back to 12v and set it to 5v once you've removed his BIOS ROM.
Tested patched BIOSes. Untested patched BIOSes.
Emails *will* be ignored unless the subject line starts "Wim's BIOS forum"
Rainbow
The UniFlasher
Posts: 3122
Joined: Wed Mar 20, 2002 4:16 pm
Location: Slovakia
Contact:

It will boot when set to 5V.
Patched and tested BIOSes are at http://wims.rainbow-software.org
UniFlash - Flash anything anywhere
NickS
BIOS Bodhisattva
Posts: 3145
Joined: Fri May 03, 2002 10:34 am
Location: Thames Valley, UK

Thanks, Rainbow. Did I misunderstand a previous post ?
Tested patched BIOSes. Untested patched BIOSes.
Emails *will* be ignored unless the subject line starts "Wim's BIOS forum"
yhnl4
New visitors - please read the rules.
Posts: 13
Joined: Sat Nov 09, 2002 7:54 am
Location: Australia
Contact:

ok, the chip is freaken hard to remove cause i don't have a rom remover. Is there any tools or trick i can use to remove it?
NickS
BIOS Bodhisattva
Posts: 3145
Joined: Fri May 03, 2002 10:34 am
Location: Thames Valley, UK

This is a DIP ?
I use a flat bladed screwdriver and work it in carefully keeping the chip (and the screwdriver blade) as flat as possible. For your friend's machine, take the chip out with the power off and leave it slightly pressed into the contacts so that you can remove it easily once it's booted.

If they are PLCC, I use a special tool with a little foot on the end which you slip down one corner of the chip and hook the chip up from underneath, alternate corners a bit at a time.
Tested patched BIOSes. Untested patched BIOSes.
Emails *will* be ignored unless the subject line starts "Wim's BIOS forum"
yhnl4
New visitors - please read the rules.
Posts: 13
Joined: Sat Nov 09, 2002 7:54 am
Location: Australia
Contact:

thanks heaps nick :)
Rainbow
The UniFlasher
Posts: 3122
Joined: Wed Mar 20, 2002 4:16 pm
Location: Slovakia
Contact:

A metal cover from empty slot can be useful too.
Patched and tested BIOSes are at http://wims.rainbow-software.org
UniFlash - Flash anything anywhere
yhnl4
New visitors - please read the rules.
Posts: 13
Joined: Sat Nov 09, 2002 7:54 am
Location: Australia
Contact:

the hot-swap was a complete success!! I'd like to thank Nick & Rainbow for the answers and advices that you guys have provided. You guys have saved me alot of money so... THANKS!!!
Post Reply