I have created an example code for u8g2 and the STM32G0 controller: stm32g031/u8g2_test_8 at main · olikraus/stm32g031 · GitHubYou need to specify the desired display here: https://github.com/olikraus/stm32g031/blob/b2424031633993d6fc16a2eb8c0b365e91...

For those who come along here, I have created a hex file, which does this job: https://github.com/olikraus/stm32g031/tree/main/enable_boot0