Cant unloack STM.

[dymek84]

always when i try unlock STM i get that message.:

Open On-Chip Debugger 0.10.0-dev (2018-09-20-12:54) Licensed under GNU GPL v2 For bug reports, read http://openocd.org/doc/doxygen/bugs.html Info : auto-selecting first available session transport "hla_swd". To override use 'transport select '. Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD adapter speed: 1000 kHz adapter_nsrst_delay: 100 none separate Info : Unable to match requested speed 1000 kHz, using 950 kHz Info : Unable to match requested speed 1000 kHz, using 950 kHz Info : clock speed 950 kHz Info : STLINK v2 JTAG v33 API v2 SWIM v7 VID 0x0483 PID 0x3748 Info : using stlink api v2 Info : Target voltage: 3.247990 Error: init mode failed (unable to connect to the target) in procedure 'init' in procedure 'ocd_bouncer'

i also trying using linux and other guides about hacking hoverboards, but always w/o success. in linux i have same message while trying unlock STM. please tell me what i do wrong.

[chaz762]

so look at your chip is it an ST chip or a counterfeit? i'm having the same trouble I found the chip maker and the supposedly have their own utility and some of these new boards have the gyros built into the main board. ugg and i can't just find and old board

[Jana-Marie]

Can you please post a picture of your setup?

[dymek84]

I think you asking about this.

Today i tried to do on another mainboard ( from actual board of my son) and same results.

[p-h-a-i-l]

I think you need to connect 3.3V to the programmer too.

[dymek84]

no because i connect battery, and in description is to not connect 3.3v because i can kill my mb

[maidenone]

I have gotten this issue several times.. sometimes it complains but still manage to flash..

if openocd fails, try https://github.com/texane/stlink it have a higher success rate, if all other fails, fall back to st link util in windows.

But in some cases i have had St link util report unlock fail as well, but a memory compare shows that it actually managed to flash..

[dymek84]

i gave up long time ago. but i need it now, did some one of you can sell one motherboard to me or know somebody who can sell it with set up o want?

[4ndreas]

I also have one of these blue boards and was not able to unlock the IC. I will desolder the chip and replace it with a genuine STM32. Besides my setup works with one of the green boards just fine. Also I can access the chip with stm32cube-programmer and read the registers and so on but every time I try to upload something this happens: I think I eased the chip since it is not beeping or doing something else. Working setup: This works fine so thank you for your effort.