HP BIOS unlock tool - Page 73

**Vesko356** · 04-16-2023, 01:57 PM

Quote:

Originally Posted by tmax

hello my name is tom I am new I have a lost hp elitebook pass I read the mix25l3255 chip I did several tests in hex in dump but it does not want to skip the security who could help me please

Welcome to the Badcaps.net Forums.
Add full model name of the device, serial number, and attach the bios dump to your request.
Read forum rules please.
BIOS guides, methods, resources and tools
RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*

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tmax · 04-17-2023, 09:44 AM

Hello sir, I'm sorry

hp elitbook 645 g9 notebook pc
5cd248fzrh

tmax · 04-17-2023, 09:54 AM

Quote:

Originally Posted by Vesko356

Welcome to the Badcaps.net Forums.
Add full model name of the device, serial number, and attach the bios dump to your request.
Read forum rules please.
BIOS guides, methods, resources and tools
RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*

.

file is here thanks all

**Vesko356** · 04-17-2023, 10:09 AM

Quote:

Originally Posted by tmax

file is here thanks all

No, 362.0 KB is not good enough for a good read. Try again.

tmax · 04-17-2023, 01:16 PM

Quote:

Originally Posted by Vesko356

No, 362.0 KB is not good enough for a good read. Try again.

I think my reading is good so I think I am not on the eeprom any info please

**Vesko356** · 04-17-2023, 03:46 PM

Quote:

Originally Posted by tmax

I think my reading is good so I think I am not on the eeprom any info please

No, as I said it's not good at all. This model should have 32MB bios.

0x888816 · 04-18-2023, 10:00 PM

Does this unlock look suspicious? This is on an EliteBook 745 G3. I tried booting with the unlocked rom but all I got was black screen with power & caps lock light on.

I also tried the unlock on a rom from a water damaged 755 G5 and the unlock "looks" much more believable. Too bad I can't boot this one up.

comp.png

**RethoricalCheese** · 04-18-2023, 10:04 PM

Yes, your first read is bad. Did you verify what you read?

Oh and thatswhy RCUnlocker is the one to use. It will kinda let you know if you have a bad read.

0x888816 · 04-18-2023, 10:12 PM

Quote:

Originally Posted by RethoricalCheese

Yes, your first read is bad. Did you verify what you read?

Oh and thatswhy RCUnlocker is the one to use. It will kinda let you know if you have a bad read.

Ah ok I was only aware of HPUnlocker. I'll re-read & verify the rom and try RCUnlocker tomorrow. Thanks.

**RethoricalCheese** · 04-19-2023, 01:50 AM

If you already messed up the first read and then wrote a faulty file then it's no use. Already corrupted.

0x888816 · 04-19-2023, 08:47 AM

Quote:

Originally Posted by RethoricalCheese

If you already messed up the first read and then wrote a faulty file then it's no use. Already corrupted.

I wrote my "read1.bin" back to the rom and it is booting. Is my read actually bad?

**RethoricalCheese** · 04-19-2023, 12:48 PM

Probably using Ch341A?

I guess it fails to read/write second half of the file properly so that would explain it.

Try reading and verifying, see if it passes.

0x888816 · 04-19-2023, 05:23 PM

Yes I am using CH431A

I have a new read which I also verified. Checksum is the same as my 2 original reads.

**Vesko356** · 04-19-2023, 07:08 PM

Quote:

Originally Posted by 0x888816

Yes I am using CH431A

I have a new read which I also verified. Checksum is the same as my 2 original reads.

You just chose the wrong chip - U366, that's your problem.

It is near the RTC battery. The password is in the other with board positional name U365, located next to the CPU fan. Upload a dump of it here and I'll remove the password. Read it twice and compare the contents beforehand.

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0x888816 · 04-20-2023, 08:46 PM

Quote:

Originally Posted by Vesko356

You just chose the wrong chip - U366, that's your problem.

It is near the RTC battery. The password is in the other with board positional name U365, located next to the CPU fan. Upload a dump of it here and I'll remove the password. Read it twice and compare the contents beforehand.

Thank you RCUnlocker recognized it and unlocked it BUT I accidentally made a huge mess while soldering and now it wont boot into bios

My immediate repair didn't work so I'll have to get my multimeter out and figure out what's going on

animorca11 · 04-21-2023, 09:27 AM

Hello Brother, Can you please help i Managed to read the BIOS finally, can you please unlock it

**Vesko356** · 04-21-2023, 10:17 AM

Quote:

Originally Posted by animorca11

Hello Brother, Can you please help i Managed to read the BIOS finally, can you please unlock it

Why don't you use the tool yourself? BIOS guides, methods, resources and tools
Next time don't post your request in two threads at the same time.
Find the topic for the specific laptop model and post a request there.
This thread is for requests in case you didn't succeed on your own or the tool can't unlock the dump.
Read the rules.
RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*:
https://www.badcaps.net/forum/showthread.php?t=103570

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Mojtabasultani · 05-06-2023, 04:48 AM

Hello Everybody:

I am try to open the Hp Bios Unlock Tool i have received an error, in Win 10 Pro 64b.

Thankyou very much.

**Vesko356** · 05-06-2023, 05:33 AM

Quote:

Originally Posted by Mojtabasultani

Hello Everybody:

I am try to open the Hp Bios Unlock Tool i have received an error, in Win 10 Pro 64b.

Thankyou very much.

Read the rules before posting:
RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*

Use the search engine and read the thread carefully, especially post #1:

Quote:

Originally Posted by RethoricalCheese

When you have your dump, just drag and drop your file on my HPUnlocker tool and it will create a new file. It will add "_unlocked" to the name of your locked file.

https://www.badcaps.net/forum/showth...55#post1203555

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aldagale83 · 05-30-2023, 09:18 AM

Hi. Im new with this. I want to unlock an HP 455 G7 Bios. Can you help. Sorry for my english. Im from Guatemala.

04-17-2023, 09:44 AM	#1442
tmax New Member Join Date: Apr 2023 City & State: london My Country: angleterr I'm a: Knowledge Seeker Posts: 4	Re: HP BIOS unlock tool Hello sir, I'm sorry hp elitbook 645 g9 notebook pc 5cd248fzrh

04-18-2023, 10:00 PM	#1447
0x888816 New Member Join Date: Mar 2023 City & State: Ontario My Country: Canada I'm a: Knowledge Seeker Posts: 5	Re: HP BIOS unlock tool Does this unlock look suspicious? This is on an EliteBook 745 G3. I tried booting with the unlocked rom but all I got was black screen with power & caps lock light on. I also tried the unlock on a rom from a water damaged 755 G5 and the unlock "looks" much more believable. Too bad I can't boot this one up. comp.png

04-18-2023, 10:04 PM	#1448
RethoricalCheese Badcaps Veteran Join Date: Mar 2013 City & State: Tartu My Country: Estonia I'm a: Knowledge Seeker Posts: 1,567	Re: HP BIOS unlock tool Yes, your first read is bad. Did you verify what you read? Oh and thatswhy RCUnlocker is the one to use. It will kinda let you know if you have a bad read.

04-19-2023, 01:50 AM	#1450
RethoricalCheese Badcaps Veteran Join Date: Mar 2013 City & State: Tartu My Country: Estonia I'm a: Knowledge Seeker Posts: 1,567	Re: HP BIOS unlock tool If you already messed up the first read and then wrote a faulty file then it's no use. Already corrupted.

04-19-2023, 12:48 PM	#1452
RethoricalCheese Badcaps Veteran Join Date: Mar 2013 City & State: Tartu My Country: Estonia I'm a: Knowledge Seeker Posts: 1,567	Re: HP BIOS unlock tool Probably using Ch341A? I guess it fails to read/write second half of the file properly so that would explain it. Try reading and verifying, see if it passes.

05-30-2023, 09:18 AM	#1460
aldagale83 New Member Join Date: Apr 2023 City & State: Huehuetenango My Country: Guatemala I'm a: Knowledge Seeker Posts: 1	Re: HP BIOS unlock tool Hi. Im new with this. I want to unlock an HP 455 G7 Bios. Can you help. Sorry for my english. Im from Guatemala.