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fryser · Nou Venit Joined: 21 Mar 2007 Posts: 8

I tried E V E R Y T H I N G! ! !

I dont know what else to do! ! !
I'am about to shoot myselft Twisted Evil

Here's my info:
- Laptop: IBM ThinkPad T20 2647
- Interface: Simple_prog

Procedure:
1- Build the interface;
2- Dismantle the laptop;
3- Connect 3 wires to (Gnd, SDA, SCL);
4- Connect COM1 to Interface;
5- Start R224RF08 [mybin.bin];
6- Turn On Laptop->F1->Password;
7- Connect Gnd,SDA,SCL to interface;
8- Execute R2RF08;

9- fucking "eeprom not available"

That's my new baby...

Eeprom before...

two comps and one interface...

Diagram of my interface...

Wires to eeprom...

^And yes, there are the good legs....

Now...

Everytime I plug the laptop and I fallow the procedure(http://sodoityourself.com/hacking-ibm-thinkpad-bios-password/), I get the "EEPROM NOT AVAILABLE" issue. I unplug the interface from COM1: "EEPROM NOT AVAILABLE".

Can somebody help me... I triplechecked EVERYTHING... but everything seems to work properly.
- Good wire contact;
- ^no short with others legs;
- Interface: ok;
- tried on 3 computers Razz

- and 3 motherboards T20 same model... give me a break.

Just wow... Shocked

Does anyone have a suggestion!?
*I can supply pictures of parts if needed.

victor · S.F. Boss Joined: 07 Mar 2004 Posts: 2581 Location: Staff

So, you tried on 3 motherboards with 3 computers, that's nice.

Launch itester and messure the outputs SCL and SDA.
-The SCL must be 5.1V (1), and -0.6V (0).
-The SDA must be ~3.3-5.1V (1) AND -0.6v (0).

Itester must show 0-1-0 for the SCL/SDAout and SDAin alltogether.
Disconnect from eeprom before the test.

[Edit]

AirParker · Interesat Joined: 23 Mar 2007 Posts: 10

I was getting the same msg, but i just rebuilt my circuit and it worked since, so my advice is unplug evertyhing and rebuild it.

Here is a pic of a circuit Victor sent me, it might help u too:

http://uploaded.to/?id=1txylk

fryser · Nou Venit Joined: 21 Mar 2007 Posts: 8

ok, thx for your quick responds, I tried to test my interface with Itester... and i'm kind of confused... Question

Here's some readings:

victor · S.F. Boss Joined: 07 Mar 2004 Posts: 2581 Location: Staff

Why do you execute itester along with r24rf08?! Close one of them.

I donlt know what you done there, but if the circuit is good, then the port isn't. Running the software without the interface must give you" Circuit not found".

Check also the serial cable, must be a straight-through one not crossover. Here is the serial port signals. In the diagram is given the serial port DB9 male not DB9 female.

BTW, the voltage on SCL is not good, the zener is not 5.1V.
10V through a 5.1 zener tied to GND, always give 5.1V, not 4.7!

_________________
Victor Voinea
ALLservice HQ, Romania.

AirParker · Interesat Joined: 23 Mar 2007 Posts: 10

After I just received the same error " eeprom not available" I've noticed my TP is not connected to the power supply, after I connected it back, the problem was gone.

I'm still stuck in that phase btw.

fryser · Nou Venit Joined: 21 Mar 2007 Posts: 8

I think you're right, 10v -> Zener 5.1 -> 4.7 is not possible, the bastard at the electronic store probably gave me a "Diode Zener 4.7v".

I asked him 3 times... "-ARE YOU SURE IT'S A 5.1v !?!? -YESSSS"

Mad

I'll post the result...
Thx all for your time. Laughing

fryser · Nou Venit Joined: 21 Mar 2007 Posts: 8

Ok, I bought the 2x Zener 5.1v, and there are good cuz, once in the interface I got (10v->Zener 5.1v -> 5.1v)

I re,re,re did the same procedure....

...result: NOTHING! ! ! !

I have the same issue: "Circuit not found or bus error" grrrr

With ITester I got the readings:

victor · S.F. Boss Joined: 07 Mar 2004 Posts: 2581 Location: Staff

Circuit not found:

-diodes could be interted, mounted upside down, I hope you use itester without "invert" checked when you messured the voltage!
-The COM port wiring, look again at serial port figure above.
-COM port is dead. try with othe PC.

When you unplug the circuit you have "Circuit not found", if you plug it (not to eeprom yet), you would have "eeprom not found..".
If all above is correct, BUT when you connect to eeprom and again you have "Circuit not found" then the eeprom pins are wrong.

Also take a look at this picture, see the serial DB9 female wiring and the circuit.

_________________
Victor Voinea
ALLservice HQ, Romania.

fryser · Nou Venit Joined: 21 Mar 2007 Posts: 8

^Thx for your post it helped me to verify my circuits.
After rebuilt my interface and have the same problem, so I decided to use a other pc...

Procedure used:

Ready to execute r2rf08.exe

Turn on the Laptop

Bios locked

Connect wires( Gnd, SDA, SCL )

And then... Execute program and good old: "Eemprom not available"

Now here's my interface photoshoped, to show you my connections:

-------------------------------------------
^ I checked with Itester and I have the very same value.
BUT, when I changed pc, I got a "eeprom not available":

bob · Posted: Wed Apr 04, 2007 9:39 am Post subject:

No, you didn't blow it, serial ports are much stronger than LPTs and besides they are buffered. The port was not working as expected from the begining.

The best advice is to build the driven programmer, this will eliminate any possible issue that you can have with the ports and everything.

Another thing: Prior running the reader, close all programs, including internet download, etc.! Because if you don't do that, the processor will be bussy and the timers won't initialize correclty.

fryser · Nou Venit Joined: 21 Mar 2007 Posts: 8

Jesus Christ! Build the driven programmer!?

That thing scare the shit out of me! That interface is going to awake and chase me in my appartement to kill me. Can I even buy that chip in the electronic store !?

And I belive that I must use it with an unsoldered eeproms right?

If (no), can I just buy it online? Confused

If (yes), that's just not possible for me... I have a 14pins eeprom.. just imposible with regular material to unsolde that thing. Embarassed

Is there any options !? Question

bob · Posted: Sun Apr 08, 2007 5:40 pm Post subject:

fryser · Nou Venit Joined: 21 Mar 2007 Posts: 8

Thx you all for your awsers, but before buying anything, does anyone have an other solution?

Maybe something I forgot!?

volant · Nou Venit Joined: 12 Jan 2007 Posts: 3