BIOS

CWWK AMD-8845HS

2025-09-12 18:17:42
412 Times read
15 Comments

I can't find any reference to a bios update for this motherboard, missing CPPC options and something goes wrong between amdgpu (linux driver) and the hardware that causes boot delays... 


There are two potential ways to get bios updates, one is pan.changwang.com which doesn't work, the other is drive.x86pi.com which doesn't have any


Is his work in progress or?

    pomacAuthor
    2025-09-12 20:00:44
    Also, supporting fwupd (https://fwupd.org/) would be extremely good!
    looddAdminCommunity worker
    2025-09-12 22:30:49

    Please clarify whether your device is a MINIPC or a NAS motherboard, as their BIOS versions are different.

    We are currently reorganizing the BIOS release list. The new and updated BIOS resources will be available at:


    👉 https://drive.x86pi.cn/BIOS

    Please use this link for future reference.

    pomacAuthor
    2025-09-13 17:49:08
    This one:
    https://cwwk.net/products/cwwk-amd-7735hs-7840hs-8845hs-7940hs-8-bay-9-bay-nas-usb4-40g-rate-8k-display-4-network-2-5g-9-sata-pcie-x16-itx-motherboard
    pomacAuthor
    2025-09-15 03:15:52

    (And any guidance would be appreciated since i can't find my way around drive.x86pi.cn)


    pomacAuthor
    2025-09-16 05:07:12

    Is it:

    https://drive.x86pi.cn/BIOS/5.NAS-BIOS/CW-NAS-AMD-FP7-4L(8745HS_8845HS_7945HS)

    The second file makes it look like it is... But I'm assuming that the google translation is messing things up.. 

    pomacAuthor
    2025-09-17 03:11:15

    On linux, you currently get:
    [    0.803612] amd_pstate: The CPPC feature is supported but currently disabled by the BIOS.

                  Please enable it if your BIOS has the CPPC option.

    And lots of (32):

    [   24.827551] amdgpu 0000:c9:00.0: [drm] REG_WAIT timeout 10us * 240 tries - get_channel_status line:350

    and one:

    [   25.250091] amdgpu 0000:c9:00.0: [drm] REG_WAIT timeout 1us * 100000 tries - optc314_disable_crtc line:145


    Never seen amdgpu compalin about this before, must be something in the setup... 



    pomacAuthor
    2025-09-24 06:12:38

    Uhmm.. Any comments? That bios is also from 2024


    pomacAuthor
    2025-09-27 06:49:30
    Found the directories under:
    https://drive.x86pi.cn/BIOS/5.NAS-BIOS/AMD/7840HS-7940HS-8845HS-NAS

    And successfully applied: https://drive.x86pi.cn/BIOS/5.NAS-BIOS/AMD/7840HS-7940HS-8845HS-NAS/Ryzen-%E5%9B%9B%E7%BD%917840HS-7940HS-NAS_2025-09-12%E6%9B%B4%E6%96%B0


    Still some issues with booting linux though... (just bugs wrt the amdgpu framebuffer that i haven't seen on any other amd system, it still functions but)

    looddAdminCommunity worker
    2025-09-27 17:57:34
    We have identified some issues in the BIOS and are currently working on them. Please be patient. The updated version will be released to the following address: https://drive.x86pi.cn/BIOS/5.NAS-BIOS/CW-NAS-AMD-FP7-4L(8745HS_8845HS_7945HS)
    looddAdminCommunity worker
    2025-11-26 15:33:45
    email-BptQ7UU6WT
    2025-12-17 20:34:53

    Hello, 

    I have this board (screenshot) and I would like to update the BIOS. Currently I am experiencing a flapping error and the NIC ports are disconnecting. I am confused about which version of the BIOS ISO file to use.

    I have come across several sources and versions. 

    @loodd Please advise.


    1) https://drive.x86pi.cn/BIOS/5.NAS-BIOS/AMD/7840HS-7940HS-8845HS-NAS/Ryzen-%E5%9B%9B%E7%BD%917840HS-7940HS-NAS_2025-09-12%E6%9B%B4%E6%96%B0


    2) https://drive.x86pi.cn/BIOS/5.NAS-BIOS/AMD/CW-NAS-AMD-FP7-4L(8745HS_8845HS_7945HS)


    3) https://doc.x86pi.cn/#/docs/fs/VXCQuW3XQSosL8RRJL2ixp/286 (link from store chat on cwwk.net)




    And please do you have any instructions on how to flash the BIOS? Ideally step by step? Unfortunately I couldn't find any instructions anywhere.

    Thanks!
    looddAdminCommunity worker
    2026-01-24 10:00:02
    looddAdminCommunity worker
    2026-01-24 10:04:55

    We have a video tutorial on how to update the BIOS in our knowledge base for your reference. The OP's solution is also workable.

    https://doc.x86pi.cn/#/docs/fs/VXCQuW3XQSosL8RRJL2ixp/201

    pomacAuthor
    2026-01-27 03:36:38
    It still shows issues with the graphics card, would be surprised if any linux distro boots without issues.

    Also thunderbolt doesn't work with the usb-c slot on the back.

    The pcie slot doesn't seem to work with risers... 
    pomacAuthor
    2026-03-06 23:28:07

    [   18.537106] kvm_amd: [Firmware Bug]: Cannot enable x2AVIC, AVIC is unsupported

    I haven't spotted that one before since i couldn't see it due to all the amdgpu driver issues -- as in the official, from amd driver for linux.

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