Recent Posts

Pages: 1 2 3 4 5 6 7 8 9 10
1
I hope this is my last post before I get my hands on the board!

According to this thread: http://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/z820-e5-2600-v2-ivy-bridge-upgrade/td-p/5086052/page/7 , there's hope:

"I was pretty excited when I was able to dump the Descriptor section from my bios using FPT to a file desc.bin (fpt.exe -desc -d desc.bios). The result is a 4kb file. Then, using Intel Flash Image Tool (FITC) I edited Decriptor Region \ Master Access Section to remove the read / write locks. A problem however arouse on the last hurdle - flashing back the modified descriptor to the bios (fpt -desc -f desc.bin) as FPT reports that 'host CPU does not have write access to the target flash region'. It suggests modifing the descriptor settings (clearly just tried that with no success) to give host access to this region."

here
https://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/Z440-640-840-is-there-a-boot-block-issue-like-in-the-Zx20/td-p/5895487

I am the author of the post you quoted. Bear in mind that that discussion was pertaining to the Zx20. I have very little knowledge of the Zx00 platform, however do recall that the board itself underwent some revision during its lifetime (4 RAM slots and then 6 RAM slots) + supposedly some chipset changes so I can not comment whether just the changing the boot block will suffice in terms or running the newer processors.

As for the Zx20 and perhpas also the Zx00 there is a method of unlocking the descriptor - you need to connect / short pins 1 and 5 on the sound chip with a 1k ohm resistor during POST. THe board will be in debug mode until reset allowing you to fully dump your bios and to write to the descriptor and with the various jumpers (boot block, me) in place to the rest of the bios. Just bear in mind that it is VERY EASY to end up with a brick if this does not go according to plan. There may also be other security features / locks in place on the actual bios chip which despite the appearance that you are able to write to the bios from the chipset side will result in an error halfway through your write and render the board inoperable. ALso, since you will be able to write to the entire bios, it may be the case that a failed write will corrupt your boot block to the extent that you will be unable to recover using the boot block recovery feature. You have been warned.

Check my response to the Z420 bios thread on this forum, I outlined the steps needed to safely update the bios boot block in that thread - basically installing a socket and programming a new bios chip with an external programmer. An external programmer with a chip clip is perhaps also an option, however these can be hit and miss hence I would not recommend using one without being mentally prepared that it may be necessary to desolder the original bios if things do not go according to plan.

PS. re the picture you inserted - crisis recovery jumper is for restoring the bios using boot block recovery. It will not grant you write access to the boot block area (FF0000-FFFFFF on the Zx20). On the Zx20 boards there is a separate jumper for that.
2
Hardware projects / Re: Z420 BIOS mod
« Last post by mtothaj on Yesterday at 06:15:18 am »
I posted a thread regarding modding the Z420/Z620 BIOS over on bios-mods.com, but to bypass the "press f1 to boot" issue. I hate to thread hijack but just wanted to throw it out there since this is on topic of modding that BIOS, do y'all think thats possible or doable? Thanks.

What is the reason you are getting the F1 prompts? If it is unplugged cables, you should be able to ground out the connections.

As for the bios it might be possible to unlock more bios menus / settings. I have looked at the Z420 bios by opening it with UEFI tool and extracting the IFR of the setup module - it seems to contain two sets of menus: HP menus and standard AMI menus. It might be possible to unlock the latter - there are various descriptions / guides on how to do this on bios modding forums. The challenge however would be flashing the contents back - mostl likely would have to be done from within the bios or if all else fails using an external programmer.
I have since sold my Z420 so unable to do any testing myself.
3
Hardware projects / Re: Hacking an HP Z800 motherboard into a standard PC case
« Last post by Andy Brown on April 23, 2017, 04:25:45 am »
Can anyone help me with determining what temperature sensor is used in Z800 (thermistor) power switch/speaker cable assembly?
Hi, Check out this post further back in the thread.

Hi Andy, I think the url reference is invalid.

Yes it's invalid. It's Attilio's post on page 11.
4
Hardware projects / Re: Hacking an HP Z800 motherboard into a standard PC case
« Last post by msilveira on April 23, 2017, 12:10:54 am »
About the cable sensing, I know it's by grounding the "detect cable" pin...
About the thermal sensor, here's some insight: http://h30434.www3.hp.com/t5/Business-PCs-Workstations-and-Point-of-Sale-Systems/HP-xw-SERIES-THERMAL-SENSOR-TRANSISTOR-SWAP-TUTORIAL/td-p/5156011
Pretty simple, huh? I just have to check for pinout in xw series service manual.

I've just got my board, it had some bent socket pins on CPU1, I'll fix it later when I get my hands on some test CPUs...
BTW, it's rev 03 :)

But I'll try to find a way to disable the BIOS BootBlock WP, I have all the tools to hack it and get it back in one piece. ;)

Of course I'll get it running before messing around  :P
5
Hardware projects / Re: Hacking an HP Z800 motherboard into a standard PC case
« Last post by msilveira on April 22, 2017, 11:43:55 pm »
Can anyone help me with determining what temperature sensor is used in Z800 (thermistor) power switch/speaker cable assembly?
Hi, Check out this post further back in the thread.

Hi Andy, I think the url reference is invalid.
6
Hardware projects / Re: Hacking an HP Z800 motherboard into a standard PC case
« Last post by msilveira on April 22, 2017, 11:37:55 pm »
Hi !

I'm wondering these post messages make pressing F1 a requirement: ???

If yes, has anyone managed to get these ports "sensed".

I've just ordered a Z800 board and I need to get this problem solved, It'll be used as a server!

Have a look at Attilio's posts on page 14

Thanks a lot Helgaiden.

I've just looked into Attilo's posts and I wonder:
1.) How the heck does the MB sense the Front USB connection?
2.) Any pictures of this thermistor? Any specs? Type? NTC ? PTC ?
7
Hardware projects / Re: Hacking an HP Z800 motherboard into a standard PC case
« Last post by Helgaiden on April 19, 2017, 02:39:19 pm »
Hi !

I'm wondering these post messages make pressing F1 a requirement: ???

If yes, has anyone managed to get these ports "sensed".

I've just ordered a Z800 board and I need to get this problem solved, It'll be used as a server!

Have a look at Attilio's posts on page 14
8
Hardware projects / Re: Z420 BIOS mod
« Last post by Helgaiden on April 19, 2017, 02:37:35 pm »
I posted a thread regarding modding the Z420/Z620 BIOS over on bios-mods.com, but to bypass the "press f1 to boot" issue. I hate to thread hijack but just wanted to throw it out there since this is on topic of modding that BIOS, do y'all think thats possible or doable? Thanks.
9
Hardware projects / Re: Hacking an HP Z800 motherboard into a standard PC case
« Last post by Helgaiden on April 19, 2017, 02:30:54 pm »
Here are more pics showing my Z800 MB fitted into a Thermaltake Armor+ VH6000 case with some fancy blue leds. The PSU is a TDPS-825AB from an xw serie desktop. The setup includes the temp sensor, firewire, usb connections to the front panel which silence many POST warnings about missing cables.  Now, only a back panel is missing, plus some fans providing input so to silence the POST warning about missing memory and rear fans. Job almost done :-)

Nice job, especially with the cables. The motherboard itself looks like a tight fit into the case. Did you drill your own holes in the motherboard tray to get it to line up correctly?

Thanks a lot: none of the original mainboard holes matched those on the case. First, I made myself a paper mask where i marked with a pencil the position of the holes in the MB, then I taped the mask to the case and drilled the metal. The result was a more or less good match of the 6 holes.

Now, this evening I fixed also the issue with the bios complaining about the missing memory fan. The original Z800 case had 2 rear fans, and the bios will complain if at least one of the TACH1 and TACH2 signals is absent. As my case has only room for one (big) fan, I modified the fan connector so that the TACH signal is split and reported to both TACH1 and TACH2 on the mainboard. The attached picture is taken from the rear, through an empty expansion slot, and shows the hacked fan connector (did something similar with the DASH connector) to silence another warning). FYI, the rear fan conn pinout is GND, +5V, TACH1, PWM1, TACH2,PWM2 from pin 1 to 6, where pin 1 is that closer to the expansion slots.Notice how pins 3 and 5 are connected together, whereas pins 4 and 6 are left unconnected as my rear fan is not PWM capable.

And this is the adaptor I built to connect a standard 4-pin fan to the memory fan socket. it takes +12V, GND, two TACH signals and one PWM (one is left unused) from the mainboard. The two TACH inputs to the mainboard are driven by the same TACH output of the fan. That was enough to silence the BIOS warning about the missing  mem fan. And this was the last warning: now I boot straight into the OS without need to press F1 no more :-)

Hi Attilio. I have this same issue with the F1 errors as everyone else experiences but with a different motherboard. The Z620/Z420 model, to be specific. The 6 pin "fan header" on the rear of the board is for a two fan kit and the weird memory fan connector is a 6 pin type. Here is a picture of the board:



[heres the link in case the picture doesn't work]
http://imgur.com/a/XIWZB

Would this be something you can maybe help me with? I'd happily buy adapters like you made from you, that would be awesome.
10
Hardware projects / Re: Hacking an HP Z800 motherboard into a standard PC case
« Last post by msilveira on April 14, 2017, 11:12:07 pm »
Hi !

I'm wondering these post messages make pressing F1 a requirement: ???

If yes, has anyone managed to get these ports "sensed".

I've just ordered a Z800 board and I need to get this problem solved, It'll be used as a server!
Pages: 1 2 3 4 5 6 7 8 9 10