STM8L151K4T6 does not work at all

[Xhendos]

I am trying to program the STM8L151K4T6. I am aware that chips may be locked and read only. That's why I tried to unlock it. When I do, I get the following output:

$ stm8flash -c stlinkv2 -p stm8l151?4 -u
Determine OPT area
Due to its file extension (or lack thereof), "Workaround" is considered as RAW BINARY format!
Tries exceeded

When I try to read the current factory bytes, I get the following output:

$ stm8flash -c stlinkv2 -p stm8l151?4 -s opt -r opt.bin
Determine OPT area
Due to its file extension (or lack thereof), "opt.bin" is considered as RAW BINARY format!
Reading 128 bytes at 0x4800... Tries exceeded

This means that reading nor writing is not working. There's always the ... Tries exceeded message before stm8flash stops.

When I plug in the stlinkv2 and print my kernel message I get the following output.

[  624.326197] usb 1-4: new full-speed USB device number 12 using xhci_hcd
[  624.475434] usb 1-4: New USB device found, idVendor=0483, idProduct=3748
[  624.475441] usb 1-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  624.475446] usb 1-4: Product: STM32 STLink
[  624.475450] usb 1-4: Manufacturer: STMicroelectronics
[  624.475454] usb 1-4: SerialNumber: QÿhH\xc2\x82WP3"\xc2\x87

This is my /etc/udev/rules.d/49-stlinkv2.rules file.

SUBSYSTEMS=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="3748", \
    MODE:="0666", \
    SYMLINK+="stlinkv2_%n"

Does anyone else got issues with the STM8L151K4T6 aswell or is it just me? I am able to use this stlinkv2 for programming the STM32F103C8T6 so the programmer is working.

[Xhendos]

After hours of research it turned out that it was a hardware error on my part and not a software error on your part. Adding a 0.1 uF decoupling capacitor solved the issue.

$ stm8flash -c stlinkv2 -p stm8l151?4 -u
Determine OPT area
Due to its file extension (or lack thereof), "Workaround" is considered as RAW BINARY format!
Unlocked device. Option bytes reset to default state.
Bytes written: 13

[wfrm]

After hours of research it turned out that it was a hardware error on my part and not a software error on your part. Adding a 0.1 uF decoupling capacitor solved the issue.

$ stm8flash -c stlinkv2 -p stm8l151?4 -u
Determine OPT area
Due to its file extension (or lack thereof), "Workaround" is considered as RAW BINARY format!
Unlocked device. Option bytes reset to default state.
Bytes written: 13

hi, super, but... capacitor? please where?