Forum RSS Feed Follow @ Twitter Follow On Facebook

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



Latest Threads
[REQUEST] Lenovo B590 (H1ETxxWW) Whiteli...
Last Post: troymax33
Today 06:03 PM
» Replies: 910
» Views: 272382
[ЗАПРОС] на разблокировку samsung
Last Post: sergei_mors
Today 04:29 PM
» Replies: 0
» Views: 0
sony vaio pcg-71712n CPU upgrade from In...
Last Post: Starlingc
Today 11:11 AM
» Replies: 2
» Views: 0
Lenovo B590 unlock the checking original...
Last Post: Denis.G
Today 09:18 AM
» Replies: 30
» Views: 15337
[REQUEST] Lenovo Y50-70 (9ECNxxWW) White...
Last Post: kels2903
Today 07:04 AM
» Replies: 1967
» Views: 394338
Lenovo E585: refuses to boot after a bio...
Last Post: kurtspirit
Today 06:49 AM
» Replies: 0
» Views: 0
[REQUEST] Lenovo IdeaPad Gaming 3 15IMH0...
Last Post: Dudu2002
Today 04:05 AM
» Replies: 48
» Views: 12320
Last Post: rezilienza
Today 01:11 AM
» Replies: 12
» Views: 1327
Intel DG41WV and Xeon X5450, microcode u...
Last Post: Bielito
Yesterday 08:10 PM
» Replies: 56
» Views: 25500
[REQUEST] Acer Predator Helios 300 PH315...
Last Post: Dudu2002
Yesterday 05:47 PM
» Replies: 60
» Views: 19593
[REQUEST] Lenovo L540 (J4ETxxWW) Whiteli...
Last Post: Dudu2002
Yesterday 08:17 AM
» Replies: 50
» Views: 3162
[REQUEST] Packard Bell TM85
Last Post: Maxinator500
Yesterday 06:18 AM
» Replies: 4
» Views: 956
[REQUEST] Lenovo Ideapad Gaming 3-15ACH6...
Last Post: Navneet Kumar Singh
11-24-2022 10:43 PM
» Replies: 9
» Views: 478
[REQUEST] Bios unlock aorus 17 xe4
Last Post: Lexmada
11-24-2022 07:52 PM
» Replies: 0
» Views: 0
[REQUEST] Lenovo G505S (83CNxxWW) Whitel...
Last Post: pkorchmidt
11-24-2022 03:29 PM
» Replies: 77
» Views: 17528
ECS RC410L/800-M (V2.0): Core 2 duo supp...
Last Post: jollystukas
11-24-2022 01:20 PM
» Replies: 9
» Views: 5794
[REQUEST] Bios Unlock Gigabyte AERO 15 O...
Last Post: falconnic
11-24-2022 11:46 AM
» Replies: 0
» Views: 0
[REQUEST] Lenovo G50-80 (B0CNxxWW) White...
Last Post: Dudu2002
11-24-2022 11:18 AM
» Replies: 101
» Views: 27411
[REQUEST] Lenovo G710 BIOS Whitelist Rem...
Last Post: Dudu2002
11-24-2022 11:16 AM
» Replies: 550
» Views: 122407
[REQUEST] Lenovo B50-70 (9DCNxxWW) White...
Last Post: Dudu2002
11-24-2022 10:55 AM
» Replies: 206
» Views: 53239

Help reflashing wiped EEPROM after bad flash
I recently flashed a custom BIOS for my HP 6730B provided by Maxinator, however this BIOS bricked my laptop so now I need help restoring it.

I initially tried creating a USB recovery drive but the laptop would not initialize BIOS recovery.

Next I tried using the Win+B and Win+V commands, but neither brought up the BIOS recovery utility.

Next I decided to see what I could do with my CH341A, so I disassembled the laptop and hooked up the chip to a separate laptop. Upon reading the chip with ASProgrammer, I was able to confirm that the custom BIOS provided to me was flashed correctly.

I next tried to wipe and flash the EEPROM with the original BIOS, however it appears that the EEPROM is stuck in Write Disable Mode, so although I was able to erase the custom BIOS, I cannot reflash the original BIOS. Using "Unprotect" in ASProgrammer does not unprotect the chip. Checking the status registers for my EEPROM (SST25VF016B) confirms that WREN (Write Enable) is low (0) and writing is disabled.

According to the datasheet (attached to my post) for this EEPROM, Writing can be enabled by sending the hex code 06 to the IC, however it's not described how to send this code in the datasheet. Does anyone know how to re-enable write mode on this EEPROM? Any help is greatly appreciated!

Attached Files
.pdf   20005044C.pdf (Size: 1.06 MB / Downloads: 0)
I was able to use a different program NeoProgrammer to write to the chip correctly, however even with the original BIOS the computers will not boot.
Did you ever get it to work ?

Regards, Vaako
He throwed the PCs away.

Forum Jump:

Users browsing this thread: 6 Guest(s)