Good news: found a way to increase TDP limit on ezbook 3 pro (N3450 Apollo Lake & N4100 Gemini Lake)

[Simone]

i got this

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[Chupa]

with this one the n3450 performes best and longest

 

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Need Help?
1981 soldered my first Sinclair computer 1K, tapedeck * 1984 build and sold IBM clones 8Mhz, 512K, 20MB HDD * 2018 messing with ultrabooks

[Azamat N.]

I runned the rw and it shows in HWinfo 10w, but I didn’t see the fps growth (Ezbook Pro v4).

[benares]

disable power limit option isn’t present in my BIOS (Release Date: 09/30/2017) but the .EXE file from joe321 is working well, thanks.

[Hodin]

Hi folks,

Why not simply flash the Bios to a full unlocked one ? There is no power limit settings or adjustable PL1 power inside ^^

Flashed my Yepo 737A with the Jumper ezbook 3 pro v4 rom and got all options unlocked now…

[Hodin]

Pictures from my modded Yepo in attachments…

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[Hodin]

Inside Bios settings…

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[Peter]

I cant increase it at v4 version. remove-limit doesnt make any files – only for a second and they all gone next. Is it posibble on this version without bios option?

[Moe]

My EZBook pro 3 v4 (locked BIOS) always goes back to 9W after the burst time of 28sec, how can I  increase this time?

[Marcus]

My chuwi 12.3 lastest bios is the same at 10W; but 10W seems to be an increase its ~100% CPU full burst and about half speed ~500MhZ on the GPU, and you do get that 30s with 100% on both which is good for burst.  so an improvement….

I’m guess there’s some other limit that needs to be moved out of the way….

 

[Moe]

Hello  again,

after some more reading I collected information on how to flash and modify the BIOS (didn’t manage to unlock yet).

So the first tool i used was AfuEfix64.efi from the UEFI shell to extract my current BIOS.

Then I used AMIBCP64.exe to set all the Access/Use  menues in Setup, Advanced and Chipset from Default to USER and flashed it again (with battery disconnect to hopefully force the BIOS to reload) but without success.
Futhermore I discovered some interessting settings, which state that the BIOS is unlocked, but the flash protection range registers are enabled, as well as RTC Lock and TCO Lock. (Maybe this affects the flash procedure that some parts dont become written?!)

Next I used the MMTool and extracted the Setup part {899407D7-99FE-43D8-9A21-79EC328CAC21} from the rom. Then I used Universal_IFR_Extractor_v0.6.exe to get readable text, resulting in:

0x159A6 Form: Setup, Form ID: 0x2710 {01 86 10 27 07 00}
0x159AC Ref: Main, Variable: 0xFFFF {0F 0F 09 00 02 00 01 00 00 00 FF FF 00 11 27}
0x159BB Suppress If: {0A 82}
0x159BD True {46 02}
0x159BF Ref: Advanced, Variable: 0xFFFF {0F 0F 1E 00 02 00 02 00 00 00 FF FF 00 12 27}
0x159CE End If {29 02}
0x159D0 Suppress If: {0A 82}
0x159D2 True {46 02}
0x159D4 Ref: Chipset, Variable: 0xFFFF {0F 0F 1F 00 02 00 03 00 00 00 FF FF 00 13 27}
0x159E3 End If {29 02}
0x159E5 Ref: Security, Variable: 0xFFFF {0F 0F 3A 00 02 00 04 00 00 00 FF FF 00 14 27}
0x159F4 Ref: Boot, Variable: 0xFFFF {0F 0F 20 00 02 00 05 00 00 00 FF FF 00 15 27}
0x15A03 Ref: Save & Exit, Variable: 0xFFFF {0F 0F 4D 00 02 00 06 00 00 00 FF FF 00 16 27}
0x15A12 End Form {29 02}

as you can see the advanced and chipset part are suppressed when the condition ‘if 0A 82 is true’ so i changed the true {46 02} in hex editor to false {47 02} but still no advanced options in the BIOS.
For compairson in an unlocked ezbook bios this section looks like:

0x159A6 Form: Setup, Form ID: 0x2710 {01 86 10 27 07 00}
0x159AC Ref: Main, Variable: 0xFFFF {0F 0F 09 00 02 00 01 00 00 00 FF FF 00 11 27}
0x159BB Ref: Advanced, Variable: 0xFFFF {0F 0F 1E 00 02 00 02 00 00 00 FF FF 00 12 27}
0x159CA Ref: Chipset, Variable: 0xFFFF {0F 0F 1F 00 02 00 03 00 00 00 FF FF 00 13 27}
0x159D9 Ref: Security, Variable: 0xFFFF {0F 0F 3A 00 02 00 04 00 00 00 FF FF 00 14 27}
0x159E8 Ref: Boot, Variable: 0xFFFF {0F 0F 20 00 02 00 05 00 00 00 FF FF 00 15 27}
0x159F7 Ref: Save & Exit, Variable: 0xFFFF {0F 0F 4D 00 02 00 06 00 00 00 FF FF 00 16 27}
0x15A06 End Form {29 02}

On other BIOSs there seems to be an boolean control array, which controlles the access to the menus. It should in our case be 01 00 00 01 01 01 (Hex: 0x0?415 or 0x27?) for main, no advance, no chipset, security, boot, save & exit, but i never managed to find it in the extracted setup region.

I also though about merging the unlock and lock BIOS, but since i don’t know what to care about I haven’t tried.

Does anybody has further ideas how to solve this or somehting else to try?

btw one of the tutorials: https://egpu.io/forums/implementation-guides/2011-asus-n53sn-r9-390x4gbps-mpcie2-pe4c-v3-0-win10-doink/

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[Marcio Santos]

On my ezbook i do the mod i get almost 15w but only for 20 sec then its gone 🙁

[Moe]

which bios version do you have?

[Marcio Santos]

I think its V5… its locked 🙁

[Moe]

But there are two locked versions v5 and v6 alias v5.1. Can you retrieve the build date of your bios?

[Author]

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