I have tried to enableĀ spkmodem, but now I can not boot at all. Maybe I did something wrong. No SeaBios, just a black screen.
I will try to find some free time tomorrow, in order to disassembleĀ and flash the laptop again, but I can't promise anything.

On Wed, Apr 8, 2020 at 10:29 PM Nico Huber <nico.h@gmx.de> wrote:
On 08.04.20 20:02, Peter Stuge wrote:
> Alesandar Metodiev wrote:
>> AreYouLoco has already posted the output of `sudo lspci -vvxxx -s
>> 0d:00.3` (when he was still running with the vendor firmware).
>> Here it is. https://del.dog/raw/firewire_lspci
>
> Comparing that with https://del.dog/raw/lspci_nntv shows that the
> chip presents itself differently on the very lowes level.
>
> Factory BIOS:
> Ricoh Co Ltd PCIe SDXC/MMC Host Controller [1180:e823]
>
> coreboot:
> Ricoh Co Ltd MMC/SD Host Controller [what:ids?]
>
> If we look at the beginning of the config space dump in the coreboot
> case, we see:
>
> 00: 80 11 22 e8
>
> These are little-endian vendor and device IDs, swap around to: [1180:e822]

e822 vs. e823 smells like an upgrade to me. I suspect that we'd need to
load some firmware on the 0.0 device. Or at least to configure something
there so it switches 0.3 on.

Nico