[HELP]The acuteangle HTPC Bios Modding

Hey!

I don’t have secure boot enabled.

I see on the board what I assume is the BIOS and some “leads” next to it (plus sign and diode symbol). But probably some additional circuitry is needed, and I am not even sure if the “leads” are anything related with a possible battery. Picture here: BIOS Chip. So it might not be very useful.

I executed the command you shared on the zip (Win32 and Win64). From what I can see, none worked. They gave no output or errors as output (in attachment).

Thanks for the additional suggestions but I want something that survives a power loss.

Not being able to use the BIOS settings, I am going to try to build the circuit that hacks the power button. If this works I will use this alternative.

But nevertheless, can you share the links for the flash programmer? If the circuit won’t work, or I buy a different PC (this one was offered), or with the programmer we should overcome any locks, right?

Thank you

SCEWIN-NoWr_Execution.zip (1.15 MB)

Edit:
I give up. The BIOS has an OEM signature and the pub key hash is “14 05 A8 A4 EB 1C 8A C2 51 19 7D 85 96 14 09 FF 15 FD CD 23 D3 25 CC DD 88 D2 17 5C DE 3B 27 36”(exactly same with the example at here). I wonder if the manufacture uses the same default key.

ANY modification (including changing boot logo/splash screen) to this BIOS will prevent the system from passing POST and shows “ROM image is not loaded” at the recovery tab of the BIOS settings.

Tip: Check whether the BIOS is signed before doing any modification. If signed, you can do nearly nothing.

=== old below ===

I’m new here and quite interested in modding this BIOS. I own one device myself, and I have necessary skills and tools to dump and flash the BIOS image. However, I have few knowledge in modding BIOS images. That’s why I’m here :slight_smile:

I’m now uploading everything required by your previous posts in this thread(including txeinfo,biosreg and programmer dump). I would appreciate it a lot if you have time and energy to look into it.

I haven’t tested the WOL enabled image you posted, since its size is not equal to the dumped one’s. I just want to make sure nothing goes wrong.(I notice that the entry point is 0x1000)

My final goal is to explore every possible and valuable modding in this BIOS. Enabling the advanced tab is an example.

Extra info:
+ There’s a battery connector and I’m able to connect a battery to it(and I DO!). So it’s actually not a big deal.

DL:
http://s000.tinyupload.com/?file_id=59868643609805559835

Dear All,
i see that someone already try to play with the acuteangle pc,
now i’m asking if it is possibile (i know, i aks before try ) to mod the bios in order to increase the tdp.
you know the cpu is a n3450 that is an apollo lake and it is lock to a tdp of 6W. It is not possible to oc the cpu (bus lock and multi lock) but it is possibile on few bios to change the TDP to 10 or 15W in order to go at “full speed” also if the temperature rise up.
For the bios that do not have this feature, we do a windows scrip using RW ReadWrite everithing on windows or using busybox on linux, btw we find that changing this register we will change the tdp design of the cpu also if the bios don’t have the option to setup the target tdp.

The values are this one

“WRMSR 0x610 0x0 0x00DD8F00” 15W TDP
“WRMSR 0x610 0x0 0x00DD8A00” 10W TDP
“WRMSR 0x610 0x0 0x00DD8600” 6W TDP
“WRMSR 0x610 0x0 0x00000000” Remove all limits

so what i’m try to learn now is if it is possibile to edit directly the bios to do this mod without the need to relaunch the script or mantain the mod indendently by the OS (linux or win) that someone want put in.

I have an acuteangle htpc so the best “idea” is to try on my machine (before brick some other machine XD).

i see that some of you already try to “mess” with the bios, so do you think that this mod will be easy to do, or there is no chance to do it?