HUSQVARNA / PIN CODE

**Romasx** · 25th November, 2019, 11:57 PM

Hi I have Lawnmower 310. Also found counter of pin try. There is RAR of 640 and 020 from mainboard. main CPU STM32F215

Press of 9 show SECURITY code KITT IEXL SIGA

Also need PIN

**Romasx** · 26th November, 2019, 11:33 AM

Compared main files of 2 lawnmowers, all differences in 3 pictures. Compared 95640

**Romasx** · 26th November, 2019, 11:50 AM

I burned data from Bolfa to 95640 and now when pressing 9 I see the same serial and different security code GAQA GJNE VHIA. It would be nice to know is Bolfa had the same security code or not. If yes, PIN would be coded in 95640 only. If not - it depends on serial also, which is stored somewhere else. Maybe someone know more about this?

Update: As I see, this security code is generated with some random or time factor. Each time I reboot device - it generate new code. So now I am not sure about where PIN is stored

**plesnikattila** · 28th November, 2019, 10:16 AM

big board.jpg small board.jpgSorry for post hijacking,i have the same problem with Automower 105( is the same as 310-315).Brand new device,asking pin at power-on.Has two boards in it: one for motor,charging,battery control with STM32f215zgt6 CPU and two eeproms connected : M95020 and M95640.I have read the content of eeproms but no security is stored there.In M95640 is stored the pin entry timer and some mosfet parameters.Also without correct data in it will not start,so there is some config also for different models.STM32f215zgt6 has 1 Mbyte flash and 512 Kb OTP,not managed to read out nothing,maybe read protected with debug mode needed to acces flash content.But PIN not stored in there.The pin access is stored on a secondary board under keyboard with STM32f103zgt6 cpu with one eeprom connected to it :M95020. I have read the content of it and nothing conclusive .But during power on if I short the Data out pin to ground,it boots up and can enter menu and all settings except PIN change.Some photos attached and eeprom dump for that model.

**plesnikattila** · 28th November, 2019, 10:19 AM

Here is the dump for educational purposes.

**ddiedas** · 11th February, 2020, 02:33 PM

what is the program scan eeprom?

**ddiedas** · 12th February, 2020, 02:17 PM

i have eeprom m95640 some people can read pin?husqvarna 420

**Romasx** · 17th February, 2020, 06:00 PM

I used Pickit3, Pickit2 not worked somehow

**ddiedas** · 18th February, 2020, 01:48 PM

if i get new automower with pin code and transfer eeprom from new to my blocked automower?

**Romasx** · 18th February, 2020, 05:10 PM

As I understand you need to transfer eeprom in display board and maybe bigger one in main board. As I understand mainboard eeprom 95640 correspond to count of retries of wrongly entered pins

**ddiedas** · 19th February, 2020, 09:14 AM

pagal varda speju lietuvis?

**ddiedas** · 19th February, 2020, 09:19 AM

yes if im try write eeprom from 95640 chip from new automower when i have pin code?

**bouboule2000** · 19th February, 2020, 10:39 PM

Hello boys ! If you need, i have ALL repair manuals for this brand....

send me MP

**ddiedas** · 20th February, 2020, 09:28 AM

bouboule2000 has chosen not to receive private messages or may not be allowed to receive private messages. Therefore you may not send your message to him/her.