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Posted: **Wed Apr 08, 2015 3:05 pm**

I have recently been given a Lagard 4200 swing bolt lock with a 3715 keypad, and was wondering if there is any way to reset the combo being the lock is not in a safe. I figured there might be a reset pin inside the lock body or something similar, that can only be accessed when the safe is open, and being this is not in a safe, I could potentially reset it and use it.
There is a 6 digit number written upon it with /2 beneath it, thought this might be a combo that had to be entered twice, but it's either old or something else. (first 3 of a phone number+area code) Entering it one time makes it beep 3 times, and entering it twice will do the same, with the result of it locking out for 5 minutes.

So, can I use this, or is it a paperweight?

IMG_0375.JPG

IMG_0376.JPG

Posted: **Wed Apr 08, 2015 6:15 pm**

Try using half the numbers then try dividing the numbers by two

Posted: **Wed Apr 08, 2015 6:41 pm**

Success! saw this post, which refers to a slightly different lock: viewtopic.php?f=100&t=9274&p=83969&hilit=electronic+safe+lock+reset#p83969

And decided to see if this one had the reset holes, here's a pic:

IMG_0378.JPG

Look at the IC (microchip) in the post I referenced, and look at mine, the holes UnlockD talks about aren't on this board, but the same pins of the IC have two gold pads by them, figure it couldn't hurt to short those out and follow his instructions.

It took some skill, as I had to hold 2 crossed needles on those pads as I installed and removed the battery, but it worked!

So, anyone with a Lagard "basic series", 4200, etc, can do this provided they have the safe open or the lock off.

Posted: **Thu Apr 09, 2015 7:18 am**

PhoneMan wrote:Success! saw this post, which refers to a slightly different lock: https://ssl.keypicking.com/viewtopic.ph ... set#p83969

And decided to see if this one had the reset holes, here's a pic:
IMG_0378.JPG

Look at the IC (microchip) in the post I referenced, and look at mine, the holes UnlockD talks about aren't on this board, but the same pins of the IC have two gold pads by them, figure it couldn't hurt to short those out and follow his instructions.

It took some skill, as I had to hold 2 crossed needles on those pads as I installed and removed the battery, but it worked!

So, anyone with a Lagard "basic series", 4200, etc, can do this provided they have the safe open or the lock off.

Thank you ! Can you remove the electronic board and make the photo of the solenoid mechanism?

Posted: **Thu Apr 09, 2015 5:13 pm**

Geez PM did you even try to hack the combo? I would of at least ran those numbers through in various combinations.

Posted: **Fri Jul 15, 2016 3:06 pm**

IMG_5180.JPG

I also have a LaGard 4200 but with a different circuit board from all of those you guys have posted.
I am not sure if this one can be jumped and no clue which contacts I should jump.... any ideas anyone on here?

See my board photo below.

Posted: **Sun Jul 17, 2016 10:10 pm**

I would have no clue on that one, when you said it was different, you weren't kidding! Being it looks like a totally different chip package, I'd have no clue. Hopefully someone can shine some light on it.

Posted: **Mon Jul 18, 2016 2:57 pm**

they both look like 30pin renesas 8bit microcontroller, They are shorting pins 1 and 6(rest line) that is clearing the flash memory. it would be nice to see the part numbers on the other boards

Posted: **Mon Jul 18, 2016 3:08 pm**

update: put a UP before the part number and it come up made by nec, This is more likely the manufaturer

Posted: **Mon Aug 01, 2016 2:59 am**

The older boards are lagard 33e
And the newer one is a 39e
The number to look at is on the side of the lockcase
Reset for the 39e needs a zapbox connected to the battery port

Posted: **Tue Aug 16, 2016 1:41 pm**

Random wrote:they both look like 30pin renesas 8bit microcontroller, They are shorting pins 1 and 6(rest line) that is clearing the flash memory. it would be nice to see the part numbers on the other boards

Random, i have no clue what you are talking about. can you explain for me in dumb-proof terms what you mean and how i can short mine to clear it of the Flash?

alex.

Posted: **Tue Aug 16, 2016 1:43 pm**

C locked wrote:The older boards are lagard 33e
And the newer one is a 39e
The number to look at is on the side of the lockcase
Reset for the 39e needs a zapbox connected to the battery port

C-lock - what is a zapbox? any links? no way to do it without it?

Posted: **Wed Sep 14, 2016 7:38 am**

the zapbox is known as a La Gard 6066 reset box. They are sold for $44.50. If there is no 93c46 chip on the board then you must use the reset box. I have used an XPROG to pull the bin file on the older style 33E and find the combination. But I can't find any information on the newer board. Coincidently, I have also pulled the combo off of the S & G 6120 lock. Very easy to work with. The 6120 has a high failure rate so I wouldn't recommend installing a used one unless you are just wanting to support your local locksmith. But I do like the La Gard locks. Just keep a spare keypad as they go bad.

Posted: **Thu Jun 20, 2019 12:11 pm**

I too have this variant board like amizan did anyone ever find a way to jump/reset?

amizan wrote:
IMG_5180.JPG
I also have a LaGard 4200 but with a different circuit board from all of those you guys have posted.
I am not sure if this one can be jumped and no clue which contacts I should jump.... any ideas anyone on here?

See my board photo below.

Posted: **Fri Mar 25, 2022 4:20 am**

Bump? Anyone in the 4200m?

.:: Keypicking :: Anything And Everything For Locksmiths, Hobbyist Lock Pickers, Locksport, Lock Picking, lockpicks, cutaways and Security. Simply The Best Lockpicking Forum Around!

La Gard 4200 combo reset possible?

La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?

Re: La Gard 4200 combo reset possible?