HP ZBook Firefly 14 G8

[peste]

I need help with a gifted HP ZBook Firefly 14 g8.
ProdID:755d3up#aba
sn#5cg30213dv
Received a bricked HP ZBook Firefly 14 g8 as a gift. Using the CAPS LOCKS LEDS & Google, i believe the bios was corrupted during an update & just needs to be restored. Issue is no one around me has a personal computer with admin rights for me to create a bios usb. Ive tried the library and other resources but noone has 1. Is it possible for someone to send me the bios files in a zip so i can drag them to the root of my usb and hopefully fix my issue. Any ideas or suggestions would be appreciate.

post the contents of the bios chip even if it is corrupted..

The bios chip must be unsoldered from the board before writing or reading..
do not use the clip, you may have errors..if you do not have anything to unsolder it with,
solder wires between the programmer and the bios chip..

you need an SPI programmer...here is a video for example..https://www.youtube.com/watch?v=DWWi...nnel=ThisIsHow

[wannabeprogramer]

Hello I finally managed to extract everything. The ec and bios should be in the zip (u367 and u368), I tried to run rc unlocker on it but it did not accept it (I double extracted and check hash for both)
Would you send me patched versions and tell me wich IC do I need to flash yours in?

The board is corvette-6050A3213301-MB-A01(A1)

[shiyab]

Hello I finally managed to extract everything. The ec and bios should be in the zip (u367 and u368), I tried to run rc unlocker on it but it did not accept it (I double extracted and check hash for both)
Would you send me patched versions and tell me wich IC do I need to flash yours in?

The board is corvette-6050A3213301-MB-A01(A1)

hi try
flash ec

[Sparo]

Hello I finally managed to extract everything. The ec and bios should be in the zip (u367 and u368), I tried to run rc unlocker on it but it did not accept it (I double extracted and check hash for both)
Would you send me patched versions and tell me wich IC do I need to flash yours in?

The board is corvette-6050A3213301-MB-A01(A1)

Hi, since you wanted to know and asked twice, here's how to use RCUnlocker with 32MB chips
Read this detailed post > https://www.badcaps.net/forum/troubl...27#post3849527

[wannabeprogramer]

Thanks a lot of the ressource Sparo and Shiyab

For now I did not reflash the ec. I just resolded the main chip. The ec chip I could read it without unsolder with a probe. I took the précaution not to do everything at the same time specially to isolate issues.

Since I resolded main bios, my pc dont post. When I plug 230v without battery the caps lock light is on on and each ten seconds the power button blink two times.

Is it possible I solded it badly? I tested every pin is not bridged with multimeter, ground is linked to ground, vcc has 3.3v.

If not, do you think I could have dommage something else with hot air?

Maybe it would be good to test main bios with probes and XGpro test ? Will it tell me if one pin is badly reacting or is it a bad idea?

[Sparo]

Thanks a lot of the ressource Sparo and Shiyab

For now I did not reflash the ec. I just resolded the main chip. The ec chip I could read it without unsolder with a probe. I took the précaution not to do everything at the same time specially to isolate issues.

Since I resolded main bios, my pc dont post. When I plug 230v without battery the caps lock light is on on and each ten seconds the power button blink two times.

Is it possible I solded it badly? I tested every pin is not bridged with multimeter, ground is linked to ground, vcc has 3.3v.

If not, do you think I could have dommage something else with hot air?

Maybe it would be good to test main bios with probes and XGpro test ? Will it tell me if one pin is badly reacting or is it a bad idea?

You only read the MAIN BIOS chip, right? You didn't erase it or flash anything to it? You can actually verify its contents with your programmer using the Verify option
If the verification is successful, then you probably knocked off a small resistor or capacitor near the BIOS chip while working on it, so inspect the soldering area carefully

[wannabeprogramer]

Yep I did not flash anything. I just desoldered main bios because I did not have a wson probe back then and resolder. I will test with programmer and check if its missing something in the bios area in case test is ok.

[Sparo]

Yep I did not flash anything. I just desoldered main bios because I did not have a wson probe back then and resolder. I will test with programmer and check if its missing something in the bios area in case test is ok.

If you haven't erased or flashed the chip, there's no need to test or verify it. Just post a clear picture of the soldering area instead

[wannabeprogramer]

The test seems ok:

APP Version : 13.16 Model : T48 MFG:2025-12-19
Device : W25Q256JV @WSON8
Pins Detected Passed!
ID: 0x EF 40 19 ......OK!
Verifying FLASH ...Succeeded. Time : 21562ms
Verifying STATUS/CFG ...Succeeded. Time : 0ms

I would need a boardview or a photo of the bios region, because there are many spots for components that could have been removed.

I also wonder If it would help to reput everything. Because for now I did not put back ssd and the motheboard is not properly installed I wonder if there cold be some kinds of test for it that prevent post

(On the picture, you will see a damaged pad. This happened because i tried first to solder a wire on the pad to read the chip, but i messed it up and damaged it. However the part under the wson is intact and I put a piece of copper to allow for probing)

[Sparo]

The test seems ok:

APP Version : 13.16 Model : T48 MFG:2025-12-19
Device : W25Q256JV @WSON8
Pins Detected Passed!
ID: 0x EF 40 19 ......OK!
Verifying FLASH ...Succeeded. Time : 21562ms
Verifying STATUS/CFG ...Succeeded. Time : 0ms

I would need a boardview or a photo of the bios region, because there are many spots for components that could have been removed.

I also wonder If it would help to reput everything. Because for now I did not put back ssd and the motheboard is not properly installed I wonder if there cold be some kinds of test for it that prevent post

(On the picture, you will see a damaged pad. This happened because i tried first to solder a wire on the pad to read the chip, but i messed it up and damaged it. However the part under the wson is intact and I put a piece of copper to allow for probing)

My eyes might or might not be tired, but I don't see any knocked-off components
You can bump this thread to ask for a schematic though > HP Zbook 14 G8 - Badcaps

[wannabeprogramer]

I tried to add solder, I scratched a bit the plastic around damaged pad to search for a trace that would had been cut.

I also downloaded the elitebook 800 but layout does not match. I am kinda stuck now.

Is it really possible that the pad 2 DO (IO1) is not connected to anything?

Maybe it is supposed to go trought the pcb on the other side? I dont see anything

Also I dont know if related but when I plug charger, the nuvoton chip near the ec heats to 30 degrees