Elitebook 820 BIOS update failed

[gagarasta]

hello everyone, I need help troubleshoot my laptop. So far I already tried:

• Unplug the adapter & battery, push power button 30sec.
• Unplug adapter, battery, cmos/rtc battery, and push power button 30 sec

but still no progress

it's happen when I try to upgrade BIOS, it's said my laptop will restart several times and it's normal, so I wait for about 5 hours with adapter plugged and no completed sign at all just blank screen and caps lock/num lock light blinking (and keep restarting again and again).

I planning to change the BIOS chip, but this 8-pin WSON type (W25Q128JVPG) unavailable at my country. Can I use 8-pin SOP (W25Q128FVSG) instead (in case the chip gone bad).

If there's any suggestion I should try without involving hot gun would be best .

thank you in advance and sorry if my english not very clear

I also attach the picture of my motherboard:

https://www.dropbox.com/s/276jbw0vu8...25536.jpg?dl=0

[on/off]

Re: Elitebook 820 BIOS update failed

Read datasheet, i think compatible bro.

Just compare it both those data, especially on:

• 3. PACKAGE TYPES AND PIN CONFIGURATIONS
• 3.1 Pin Configuration SOIC 208-mil

https://cdn.badcaps-static.com/pdfs/...c8b3a5a7ae.pdf
https://cdn.badcaps-static.com/pdfs/...98da8c25fa.pdf

[piernov]

Re: Elitebook 820 BIOS update failed

Why change the BIOS ROM chip? If you failed flash, you need to reflash it.
Either by using the recovery procedure of the laptop, or if it doesn't have one or it doesn't work, by pulling the chip and flashing it with an external programmer…

[gagarasta]

Re: Elitebook 820 BIOS update failed

Read datasheet, i think compatible bro.

Just compare it both those data, especially on:

• 3. PACKAGE TYPES AND PIN CONFIGURATIONS
• 3.1 Pin Configuration SOIC 208-mil

https://cdn.badcaps-static.com/pdfs/...c8b3a5a7ae.pdf
https://cdn.badcaps-static.com/pdfs/...98da8c25fa.pdf

Thanks bro, this is very reassuring. from the paper JV series can operate at higher voltage + faster read speed The motherboard currently using 8-PIN WSON type, but it provide 8-PIN SOP too like in the picture, I wonder if that's meant to be able to use another chip type.

Why change the BIOS ROM chip? If you failed flash, you need to reflash it.
Either by using the recovery procedure of the laptop, or if it doesn't have one or it doesn't work, by pulling the chip and flashing it with an external programmer…

Thanks for the reply. Yes I can reprogram the chip using CH341A, and yes I intend to keep using the same chip, but if, if the chip's gone bad after desolderin, I wonder if I can use another chip type as an alternative (and 8-PIN SOP type so convenient to reprogram without desoldering).

I'm pretty anxious about my soldering skill, plus on the paper written storage max temp 150°C, how about BIOS dump I just reprogram inside? Will it be corrupted after high temp exposure?

Sorry guys I'm new on this so please be patience with me

[piernov]

Re: Elitebook 820 BIOS update failed

You won't damage the chip by desoldering/soldering it back. You have more chances of damaging the board, but this isn't a difficult operation as long as it's not the first time you solder on a board.
You absolutely need an hot air station anyway to desolder a WSON8 chip (they have a center pad).

[gagarasta]

Re: Elitebook 820 BIOS update failed

Update!!! Hello guys !!! Finally I'm done repairing my Laptop!

After long thought in the end I'm using W25Q128FVSG chip because it's easier to reprogram without desoldering first.

At first I thought I can use bios file extracted from HP BIOS updater and it's a mistake (dumb me ), my laptop won't turn on. The LED keep blinking white and yellow nonstop (I guess the soldering wasn't good, but it was good).

So I made a new thread:
https://www.badcaps.net/forum/showthread.php?t=75730
asking for BIOS file and thank God there's someone able to repair my failed old BIOS dump from the old chip. I reprogram the chip and success in first try