i need Dell XPS 7390 2 in 1 Gen 10 bios.bin file

[Maxamax]

I have indeed de-soldered the chip to program it.

I already thought of this as the cause of the problem (when I tried to repair the BIOS myself before posting), but I don't think this causes the issue.
I tried powering up the PC without the chip at all and nothing happens.
I'll verify with my multi-meter anyway, thank you

[Maxamax]

Sorry for interfering, have you de soldered the chip?
If so, there is a possibility that not all contacts on the chip are connected when soldering in.
This happened to me once with a Dell 5500 because only the power button wanted to light up the front LED amber.
After I checked the contacts and soldered them, it worked again.

Hi I'm writing a quick update, I tried soldering the chip again but it doesn't help.
I verified the contacts with my multimeter and I get the correct voltage on all the pins.
Is it possible that another chip needs programming ?

Best,
Maxamax

[skinner]

I was looking for some help. I have an Dell XPS 13 7390 2in1 that turns on, shows video but stays at the dell screen. I'm not 100% sure if this is a bios issue but was hoping someone had a working one I could try. Thanks.

st: j365yy2
ex: 41550619178

[SI3MAR2000]

Dell XPS 13 7390 2-in-1 DDP31 LA-G172P stuck on dell logo.

someone can help me, i still need to solve the problem.

[ali0robot]

hi guys,
I have xps 13 7390 2-1 that stuck at Dell logo and restart continually. could some one fix my bios bin please
servic tag : 4h7s573

[ali0robot]

does it issue with bios or something else, because I have programmed two other bios but still same thing.

[danito]

hi guys,
I have xps 13 7390 2-1 that stuck at Dell logo and restart continually. could some one fix my bios bin please
servic tag : 4h7s573

try

[ali0robot]

try

thanks for reply but same thing, I think issue is on other chip or component

[ali0robot]

does anyone has a suggestion for me, laptop turn on but stuck on Dell logo. I have tried several bios. even I have programmed EC chip but still same thing. I couldn't find any fault in hardware. caps lock is on and doesn't change. two amber and one white led blinking

[ngodatvd5]

Hello, my laptop starts up slowly and doesn't detect audio. The BIOS is not the original one for this machine, because the Service Tag on the laptop and in the BIOS are different. The laptop's Service Tag is 6STL5Y2, while the BIOS currently shows BKT70Z2.

[peste]

Hello, my laptop starts up slowly and doesn't detect audio. The BIOS is not the original one for this machine, because the Service Tag on the laptop and in the BIOS are different. The laptop's Service Tag is 6STL5Y2, while the BIOS currently shows BKT70Z2.

post full name and model, motherboard model,etc.

[ngodatvd5]

Dell xps 13 7390 2in1. Motherboard model ddp31 la-g172p

[hoaca388]

Hello, my laptop starts up slowly and doesn't detect audio. The BIOS is not the original one for this machine, because the Service Tag on the laptop and in the BIOS are different. The laptop's Service Tag is 6STL5Y2, while the BIOS currently shows BKT70Z2.

XPS 13 7390 2-in-1
Service Tag: 6STL5Y2

[ngodatvd5]

Thank you. The BIOS is working and the laptop now starts up quickly, but there's still no sound from the speakers or the audio jack. In Device Manager, the Realtek driver is detected. It might be a hardware issue—I will check again.

[francisew]

Model: Dell XPS 13 7390 2-in-1
Dell XPS 13 7390 2-in-1 13" Intel Core i7 - motherboard : DDP31 LA-G172P rev1.0 (A00) 2019-05-27, vendor: GCE, made in China
Service Tag: DPR71Z2
Express Service Code: 29855503550
Motherboard serial number: DP/N OV2CCD CN-OV2CCD-CMK00-99J-0118-A00
BIOS download attached: winbond_25q256jveq-xps13_2-in-1_7390.zip

Problem/symptoms:
Laptop now shows Dell logo briefly when plugged into usb C power supply, or when power key is pressed with battery connected. New battery was installed. After a few seconds (<5), the laptop shuts down. It does not respond to any keys (like control-escape, F2, F12, etc). It does not show any message text about pressing keys to enter bios settings.

Using a multimeter, I followed the power on sequence, and saw all relevant rails *very* briefly have voltage before it shuts off. Using IR camera, no parts get particuarly warm (<~25 degC) when it is powered up.

I believe the bios may be corrupt. I downloaded 2 copies of the bios and they match (using HxD). I can see english error message text near the end, so it looks like a good download.

Please note that this Dell laptop has been a disaster for years. They swapped it a couple of times, including first the mainboard, and later the whole system. They also swapped the bottom panel. I haven't had a service tag sticker since the computer swap, but I pulled the service tag information from the Dell web site. I hope it matches the BIOS. I called Dell for help, and they said send the laptop in and they will repair it. I pointed out that I need the data. They said make sure to back the data up before sending the laptop in, because they won't promise to send my original hardware back if they can't get it working. I pointed out that I can't back up the data if the system won't boot. They suggested taking it to a local computer repair shop. I tried some local places, but they all said that they don't know how to help. I REALLY appreciate this forum, and the awesome people who provide this useful information & help!!!

At this point my main goal is to recover data from my old laptop, which seems impossible unless I can somehow get this system to power on. I have considered hiring an electronics repair service to transplant the eMMC BG4 chip from my Dell mainboard to the NVMe variant of the same chip. Has anyone tried this? I don't know if soldering temperatures might cause the data to be lost anyways. Unfortunately, I cannot find datasheets for the Toshiba SSD/eMMC.



Other notes (for other people who might be looking into this model!):
At first I didn't understand how to remove the black heat-shield that has the fans attached. After the screws (mostly on the underside of the board) are removed, it can be gently pried away from the mainboard. There is a metal rail soldered to the PCB, and the heat-shield is pressed onto it (no adhesive, solder, etc).

Model details:
https://www.badcaps.net/forum/specif...rade-or-repair

Board files:
https://www.badcaps.net/forum/troubl...quest?t=106805

Actual bios chip: Winbond 25Q256JVEQ labeled as component UH8. AsProgrammer recognizes it as W25Q256FV.
Bios chip location: looking at the motherboard from the bottom of the system, with the fans along the top and the battery at bottom, the bios chip is located between the black shield and right side fan. It is close to the ribbon cable for the middleboard.

I was able to download the bios using a black CH341A programmer (with the modification to 3.3V), using a 6*8mm WSON8 pogo pin Probe tool I bought from amazon: https://www.amazon.com/dp/B0CJQ8KQK2. Note that the CH341A driver requires the parallel port version of the CH341 driver (https://www.wch-ic.com/downloads/CH341PAR_ZIP.html).

Actual SSD chip:
Toshiba KBG40ZPZ512G (BG4 series eMMC, 512GB) / now Kioxia. This 512GB SSD is a BGA part directly attached to the motherboard, not an NVMe drive. I think the same chip is likely used in the NVMe variant (KBG40ZNS512G): https://www.amazon.com/Kioxia-KBG40Z.../dp/B0B9NTRGGF

[francisew]

By the way, many people seem to have similar issues with this laptop model:
https://www.reddit.com/r/Dell/commen...eriously_died/

[Markus1741]

Model: Dell XPS 13 7390 2-in-1
Dell XPS 13 7390 2-in-1 13" Intel Core i7 - motherboard : DDP31 LA-G172P rev1.0 (A00) 2019-05-27, vendor: GCE, made in China
Service Tag: DPR71Z2
Express Service Code: 29855503550
Motherboard serial number: DP/N OV2CCD CN-OV2CCD-CMK00-99J-0118-A00
BIOS download attached: winbond_25q256jveq-xps13_2-in-1_7390.zip

Hello you can try this new file from version 1.35.0 but I wouldn't make too much hopes that the Dell XPS usually doesn't want to start with newly created BIOS files.
I don't know why this is.
Still, good luck maybe someone else knows how to repair it.

[francisew]

Thanks Markus, I can confirm, I tried with the latest bios image you shared. Unfortunately, as you predicted I'm still seeing the same behavior (powering back down after ~5 seconds, never showing any options to enter the bios). Now I'm really not sure what to try next...

[francisew]

Continuing my saga of trying to recover data from the Toshiba / KIOXIA SSD on the XPS 13 2-in-1. It is actually a single-chip NVMe storage device, including the memory and controller in a single package (not an eMMC as I wrote above). The drive appears to come in two formats. One is the single-chip direct to board version included on the Dell XPS13 7390 2-in-1. The other format is an m.2 22x30 NVMe carrier board that also includes a handful of external power regulation components.

It's unfortunate that I haven't been able to find datasheets for the Toshiba/KIOXIA BG4 series NVMe chips (detailed electrical characteristics, timing diagrams, pinout information for BGA, and land patterns or mechanical specifications). Kioxia have not replied to my inquiries.

Toshiba KBG40ZPZ512G -> XPS13 direct-to-motherboard IC variant
KIOXIA KBG40ZNS512G -> m.2 m carrier module variant

I purchased two of those m.2 boards, and tried to visually confirm that the IC's on the m.2 modules are actually exactly the same chip as on the XPS laptop. Unfortunately, the IC package on the m.2 variant isn't clearly laser engraved under the model sticker, so I haven't been able to confirm this yet. I can confirm that the IC on the m.2 module is also a 16x20 mm package like the IC on the XPS13, which is very encouraging. I will try to transplant the BGA package from the Dell XPS13 to the carrier board in a few days.

I also picked up a solder mask stencil for the Microsoft surface 1 based on https://www.badcaps.net/forum/troubl...g-kbg40zpz1t02. The stencil pattern shown in that post does match the 16x20 mm chip dimensions of the BG4 packages I have, and looks like the pattern shown in the promotional image I found of the back of the chip. I have not desoldered any of the chips yet to confirm the land pattern on the bottom of the IC, but I will take photos when I do.

I have attached photos of the m.2 board variant. It's frustrating because there is definitely some laser engraved markings on the chip package, but it's not clearly visible at any angle, magnification, or lighting. It looks like there are a few QR code patterns as laser-etched spots, and possibly some text etched as discrete spots (like dot-matrix printed by laser engraver). The text is not legible at all. It does look like the same marking layout / pattern as on the NVMe chip on the XPS 13 (large image below), but the m.2 m variant package isn't legible.