Forum RSS Feed Follow @ Twitter Follow On Facebook

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
[-]
Welcome
You have to register before you can post on our site.

Username:


Password:





[-]
Latest Threads
[REQUEST] Lenovo Thinkpad T420s (8CETxxW...
Last Post: sidoravich
Today 01:32 PM
» Replies: 197
» Views: 134122
[SOLVED] Clevo W950JU BIOS unlock
Last Post: GigantTech
Today 01:18 PM
» Replies: 4
» Views: 76
[Request] Asuspro E510 MiniPC - Enable V...
Last Post: Peixeiro
Today 01:02 PM
» Replies: 0
» Views: 25
[REQUEST] Acer Nitro 5 AN515-54 BIOS Unl...
Last Post: GRH
Today 11:59 AM
» Replies: 145
» Views: 113026
req : hp pavilion g4 1200ee
Last Post: asm0089
Today 12:17 AM
» Replies: 0
» Views: 126
[REQUEST] HP Omen Max 16-ah0043dx
Last Post: keith1341
Yesterday 03:57 PM
» Replies: 0
» Views: 88
[Guide] ASUS K56CB BIOS Unlock (Advanced...
Last Post: Nikilite
Yesterday 11:09 AM
» Replies: 2
» Views: 580
Lenovo ThinkCentre M75q-1 (AMD) - Unlock...
Last Post: AdoniS4U
Yesterday 09:47 AM
» Replies: 0
» Views: 89
[REQUEST] Lenovo G500 (78CNxxWW) BIOS Un...
Last Post: dima940414
Yesterday 08:32 AM
» Replies: 290
» Views: 216913
[Request] Asus Tuf Gaming FX505DY BIOS U...
Last Post: laret
02-16-2026 05:20 PM
» Replies: 3
» Views: 2812
Bios unlock Dell 7480 Help!!
Last Post: mgale03xx
02-16-2026 12:48 PM
» Replies: 0
» Views: 130
[REQUEST] Fujitsu Siemens ESPRIMO E5731 ...
Last Post: Dextermbhb
02-16-2026 11:34 AM
» Replies: 1
» Views: 2054
HP update model and serial
Last Post: Lordcorey07
02-16-2026 09:55 AM
» Replies: 0
» Views: 108
Alienware 15 R2 AMi bios unlock all hidd...
Last Post: blackcat1996@
02-16-2026 07:56 AM
» Replies: 2
» Views: 267
[REQUEST] Lenovo G480 (5ECNxxWW) Bios Un...
Last Post: Eudes Jandrey
02-15-2026 06:22 PM
» Replies: 19
» Views: 20821
[REQUEST] Acer Extensa 215-52 Whitelist ...
Last Post: FrancyNaso
02-15-2026 05:23 PM
» Replies: 0
» Views: 157
HP Pavilion dv6-2155dx BIOS whitelist re...
Last Post: thalysonle
02-15-2026 10:12 AM
» Replies: 1
» Views: 277
[REQUEST] Lenovo Y70-70 (9ECNxxWW) BIOS ...
Last Post: Liliusz
02-14-2026 12:49 PM
» Replies: 76
» Views: 51915
[REQUEST] Lenovo L440 Whitelist Removal
Last Post: Dudu2002
02-14-2026 10:25 AM
» Replies: 146
» Views: 89756
Guide/Instructions on how to create flas...
Last Post: WhiskerBiscuit
02-14-2026 06:36 AM
» Replies: 0
» Views: 156

Asrock Rack C612 ES CPU support
#1
I got:
1 EP2C612WS
2 EPC612D8A

4 ES CPUs
2 normal CPUs

an EEPROM programmer (in case I bricked a bios and couldn't get bios splash screen)

the thing is: all 4 of the ES CPUs work on the EP2C612WS. none of them work on either of the EPC612D8A, Dr Debug gives a "Cd" error code. The boards boot with normal CPUs.

so I got mmtool aptio, looked at the tab: CPU Patch, the microcodes of both of the bios and saw that the entries are different.

I extracted the microcodes of the EP2C612WS bios and deleted the microcodes of the EPC612D8A bios and inserted the EP2C612WS microcodes.

With this new bios the board post and boots with normal CPUs but still doesn't post with the ES CPU ("Cd" error code).

you guys any idea if I should do something else? or is that not how this ES CPU unlocking works?

bios files:
https://www.asrockrack.com/general/produ...S#Download
https://www.asrockrack.com/general/produ...A#Download
find
quote
#2
Tell sSpec of your ES CPUs.
Post a screenshot of third (Mainboard) tab of CPU-Z with supported CPU on EP2C612WS and EPC612D8A.
find
quote
#3
https://i.imgur.com/xVcyjWX.jpg this cpu
this is the screenshot of the seller for this cpu
https://i.imgur.com/QrMK3Pa.png

my ep2c612ws is running ubuntu now but it has worked with the above-mentioned cpu and the current cpus it has installed now:
https://i.imgur.com/OO7yqs9.jpg
this is the cpuz from the seller of this cpu
https://i.imgur.com/bnBfCmm.jpg
find
quote
#4
I can't help you without real information that I requested.

BTW: It's not microcode problem. Did you tried to use old version of BIOS (2.10) for EPC612D8A?
find
quote
#5
QHVK (ES1) CPU
EPC612D8A CPU-Z 3rd page (boots with a 2609V4 Cpu)
https://i.imgur.com/2AQ62Ec.jpg

weird it actually says X99...? its a fake c612?
find
quote
#6
Make a photo of main page in BIOS.
find
quote
#7
https://i.imgur.com/nqcsF9q.jpg
find
quote
#8
Last chance - BIOS 2.10
find
quote
#9
rolled back to 2.10
2609v4 boots

QHVK ES CPU gives the same "Cd" code, pressing reset gives a short 02 code (02 ap initialization before microcode loading) and goes straight back to Cd

https://i.imgur.com/SedE2Ih.jpg
find
quote
#10
Try to flash by hardware programmer BIOS from EP2C612WS.
find
quote


Forum Jump:


Users browsing this thread: 1 Guest(s)