how to flash ram SPD when it seems to be read-only?

[moral hazard]

It doesn't work!!

I put the ram into my notebook and all I got was a black screen.
Not even the toshiba logo came up.

I checked my work with a DMM, I checked everything many times. It was perfect.
I don't know why it doesn't work.

Anyway I put my good ram back into the notebook and it's fine.

I think the reason it doesn't work is that pin 7 is also used as "temperature event".

Some Micron modules use a seperate EEPROM and temperature sensor configuration.
These modules have WP connected to Vss through a pull-down resistor enabling the
EVENT# pin on the temperature sensor and the WP pin on the EEPROM to share a
module edge connection.
The WP pin on temperature sensor/EEPROM combination devices is not an external
connection. It is tied HIGH internal to the device. On combination devices, the EVENT#
pin is located where the external WP pin would be on a standard EEPROM.

From what I understand, the external pin that I modified is the EVENT# pin.
The WP is done internally.

So this mod may work with some ram but with my ram it doesn't work.

Now I have to go out and buy new ram that can actually be flashed.

[moral hazard]

Right now I have undone the modification.
I put the ram into my notebook and it works fine.

But obviously it's still write protected so is pretty much useless for overclocking.

I'm really disapointed in how this turned out. I thought that it would work
I still think there must be some way to modify the ram to remove write protection, but it's too hard for me.

Anyway I'm giving up on this (for now).

[TURBODUDE!!!]

So I am able to flash my kingston ram with spdtool. Works great.Although for some reason spdtool does not recognise my SMbus driver unless I open setfsb and press getfsb. I know this is strange right?

Yo! Have ya checked the latest Thaiphoon Burner 6.6.0.0 SuperB! Edition? This proggy can do cool things, bro!

moral hazard,
let's create a list of memory modules with a write-protected SPD chip!

[moral hazard]

Yo! Have ya checked the latest Thaiphoon Burner 6.6.0.0 SuperB! Edition? This proggy can do cool things, bro!

Thanks, I'll check it out.

moral hazard,
let's create a list of memory modules with a write-protected SPD chip!

That is a good idea, can you start a new thread and I will post what I know.

[weinter]

I had experience with HYNIX.
They are protected.
I was able to successfully flash Samsung and Kingston (Using Elipida chips) modules.

[moral hazard]

Actually one easy way to check is to find the datasheet for the ram you want to buy.

In the datasheet it sometimes will say "SPD programmable".

Also you can't really go by brand name, it's a case by case kind of thing.

[weinter]

Actually one easy way to check is to find the datasheet for the ram you want to buy.

In the datasheet it sometimes will say "SPD programmable".

Also you can't really go by brand name, it's a case by case kind of thing.

Nope they don't put that data out in some of them.

[moral hazard]

sometimes

As you can see, I said "sometimes"

[TURBODUDE!!!]

moral hazard
There is also a good thread at XS about WP SPD. Here is the link to Spd Update Failed ... Protected EEPROM or what ???. Thanks man for your efforts! You are doing a great job!

[User Retired 2]

moral hazard
There is also a good thread at XS about WP SPD. Here is the link to Spd Update Failed ... Protected EEPROM or what ???. Thanks man for your efforts! You are doing a great job!

The most promising part of that thread was the second last post where there was going to be an effort to remove the WP SPD eeprom and solder another on that had been pre-flashed with the desired SPD table. No reply was given whether it was successful or not though the user was somewhat confident it would work. User had previously unsuccessfully tried to un write-protect the eeprom by playing with the WP pin on the chip.