Hi!
Sorry to bother you on such an old thread, however I have the same Acer Veriton and I’d like to upgrade to the same i3-8100T CPU.
It is mandatory to flash the modded bios using a physical programmer tool or is it possible to do through software on the N4640G? Sorry for the noob question
Same question here! I’m planning to put a 8400t, my bios is R02-A2 C3 model is N4640GW_V2, its require to flash bios with ch341a, or can be flashed though usb in BIOS? Also, is 9th gen supported?? I can send my bios if required, or any bios here in this post for R02 is supported for mine?
I opened this thread a long time ago.
From what I recall, 9th gen is possible.
Make sure to check the pin scheme for the different 8th or 9th gen if you need to insulate pins. This is the case for x400 and up I think, please check the schematic.
I know for a fact the 8100t does not need anything apart from physical CH341A programmer.
Also for @alex5230 sorry for the late response, I don’t check this thread often anymore.
I see you mentioned a N4640GW_V2 with a different bios version, R02-A2 instead of R01-B1 that I used.
I don’t think it would be wise to use the BIOS from this thread for your model.
Please correct me if I’m wrong.
My N4640g is still running at the moment and works flawless, only needed to change some settings in the bios regarding UEFI to find the m.2 drive.
I moddifed my bios for putting a it 8400t and isn’t working, I flashed with a ch341a and tried different bios from this forum and neither. please some help. it is requiered to do pin mod with this cpu? the old cpu stopped working also de g3900t, fans started spinning at max speed when plugged, and have to force 10s the power button in order to stop it, no posting nothing, and no beep from the buzzer neither. @dsanke 
@Jasperkiller1
Here is some info including the pinmod.
Like I said, it’s not wise to flash as you have an n4640g_v2 instead of an n4640g.
I’m not sure if the bios will work on your version at all, but if I have to guess you will need the pin mod eventually.
I saw some people use aluminium foil to connect the pins and something like electrical tape to isolate the pins.
I don’t think I will be able to help with the v2 as I’m not sure how big of a difference it is compared to the normal one.
can you boot when you restore your backup bios?
“you don’t really need pin mod. Mine is i3 8100T on N4640G and it works just fine.
For N4640G v2, you can use R02-B1 version”
i do have a Acer Veriton N4640g bios r02-a4 c2 - motherboard rev DBVNH1100 3 = PH11 P
as of now i only have a celeron g3900t working
when i try i7-6700 (non T) or i5-7500T there is no boot
my power supply is a 65w
i didnt manage to flash the last official bios acer R02-B1:
I can’t find any DOS acer flash exe tool
does R02-B1 non modded would allow me to use i7-6700 (non T) or i5-7500T or i3 8100T ?
After two n4640g v2, I didn’t got to get working none of the two, I tried to coffetime the original dump bios, r1 bios, r2 bios, a 8100 without pin mod, a 8400t with pin mod, enable intel me and unable intel me (this in the coffetime app, as my version of the n4640g doesnt have the pins soldered for changing the intel me behaviour), external gpu, internal gpu and every time i get the same result, fans spinning at the maximum power without even pressing the power button. please any ideas?! Currently im trying the 8100, but without succeed, if someone has a working bios for the r2 model bios. I attach my dump bios just in case someone is able to mod it for me PLEASEEE HELP!
BIOS BACKUP.rar (5.3 MB)
Hi, I have a Veriton N4640G R01 rev, I tried to update my bios to this bios file without any success. I got “secure flash rom verify fail” message. Secure boot is disabled and TPM too.
Successfully installed this bios with programmer. Sometimes the system doesn’t boot up, sometimes the windows stuck at the beginning. Very unfortunate, but I have to go back to the original bios.
@Jasperkiller1
I just installed the same modded BIOS on my Acer Veriton N4640G; do you know if the i3-9300T works correctly?
Hello.
I recently bought cheaply an Acer Veriton N4640G. It has an BIOS version R01-A3 from 2016. I wonder if I could use the R01-B1.zip you modded. The Veriton came with an Intel Pentium G4400T but it was supposed to come with an i3-6100t and also there is a caddy missing for the sata hdd.
I’m wanting to buy an intel 8th or 9th gen to use with the Veriton. The G4400t is kinda sluggish with just 2 cores and besides that… the case around the cpu area is freaking hot when in use. I personally don’t like how the fan is mounted and the near end of the heatsink as well. I also need to find an extension cable to had hdmi. Displayport is evil…
So can I use the R01-B1? I forgot to check if I can flash the bios directly inside of it.
Is there a page with instructions? I do own 2 programmers, one of them is tl868ii and I forgot the name of the other one.