What connections are needed in order to program a raw STM8S105K4?

[MMald.17]

Hello everyone,

I recently bought a single STM8S105K4 to fiddle with. I've soldered it to a board and I'm trying to flash it using the stm8flash utility and an STLINKv2. I've made the following connections to the MCU:

STLINK -- MCU

RST -- PIN 6 (NRST)

SWIM -- PIN 31 (SWIM)

3.3V -- PIN 11 (VDD)

GND -- PIN 9 (VSS)

Additionally there is a 470 nF ceramic capacitor between VCAP and VSS and a 100 nF one between VDD and VSS.

Whenever I try running "stm8flash -c stlinkv2 -p stm8s105k4 -u" the command fails saying "tries exceeded", seemingly because it couldn't establish a connection with the MCU.

Are my assumptions correct? Am I missing something?