Lenovo IdeaPad 5 2-in-1 14IRU9 / 16IRU9 bios

[reformatt]

try
sn - YX0B1GYF

Thanks, I did try it but behaviour didn't change. I don't have a schematic, but believe its missing a signal from the PCH (like PM_SLP_S4). The laptop has been dropped so suspecting bad balls under the CPU. Laptop was donated as not working so goes to the donor pile.

[danito]

Have one of these on the bench. It appears to loop continuously when powered on between 40ma to 80ma via USB-C. All the main power rails appear to be there but there is no RAM power enabled, and therefore nothing beyond that. No schematic but have dumped both BIOS IC's on the board. There is no serial number or anything else on the base plate to provide.

What is new to me is that this is an Intel CPU but the dumps don't conform to any structure that I'm used to to work out if it's corrupt or not. Looks more like an AMD dump. Any both files attached.

try
sn - YX0B1GYF

[reformatt]

Have one of these on the bench. It appears to loop continuously when powered on between 40ma to 80ma via USB-C. All the main power rails appear to be there but there is no RAM power enabled, and therefore nothing beyond that. No schematic but have dumped both BIOS IC's on the board. There is no serial number or anything else on the base plate to provide.

What is new to me is that this is an Intel CPU but the dumps don't conform to any structure that I'm used to to work out if it's corrupt or not. Looks more like an AMD dump. Any both files attached.

[trepachka]

In case anyone is interested, I am attaching both bin files extracted from a functional IdeaPad 2-in-1 16IRU9 notebook with S/N YX0BE1NX (Type 83DU).
I verifed both files work by flashing both bios files onto another laptop that was not posting and drawing about 0.2A at any time. I am also posting a photo showing both bios chips' position on the motherboard.

There is inherent issue with Lenovo models having "IRU" in their model name which I posted on a different thread. When flashing bios files belonging to another computer, you also have to flash the contents of the EC chip from that computer as well. Otherwise, as I found out, computer will not recognize the NVME drive after starting computer by pushing the power button. It will work fine after pushing "Cntrl"-"Alt"-"Del". This happens every time. Unfortunately, I do not have the tools to extract the EC chip contents.

But go ahead and try the attached files and please report if they helped you.

[igeektech]

Tried the first one, didn't work. Tried the second after and same thing. I'm using CH341A reader with NeoProgrammer. On the 8MB chip it doesn't auto detect — I use W25Q64JV as default

[Sparo]

Experiencing issue of Power button LED and Charging LED Flashing fast for about 10 seconds then stops, hit power button LED stays on for 3 seconds then off and does nothing. Occurred after failed firmware update.
SN: MP2GPRAA
Lenovo Ideapad Slim 5 16IRU9

Any help would be appreciated.

Hi First Try flashing ONLY the 16MB "Chip firthest from CPU"
If it doesn't work then flash both and give feedback

Lenovo IdeaPad Slim 5 16IRU9 - Type 83FW
Lenovo IdeaPad Slim 5 14IRU9, 16IRU9
Machine Type Model 83FW0001US
BIOS Version PFCN18WW
WinKey/DE000-DE030
DMI/2D000-2EFFF

[igeektech]

Experiencing issue of Power button LED and Charging LED Flashing fast for about 10 seconds then stops, hit power button LED stays on for 3 seconds then off and does nothing. Occurred after failed firmware update.
SN: MP2GPRAA
Lenovo Ideapad Slim 5 16IRU9

Any help would be appreciated.

[Assembler]

i will,, same here.. no damages no water spils...nothing i'm thinking to start a repair thread on the forum for this model.

[3pka]

sorry boring again on this thread... i send messages to other users experiencing the same issue without any reply...
checked everything on the board ... switchings... magnetic sensor.. voltages.. everyhting seems ok...
the chipset is powered, the EC is powerred.. 3.3v and 5v are ok.. 1.8V is ok... no shorts... no burned things.. the 3.3 LDO is present...
pressing power button there is activity (3 restarts) .. but after a while the current consumtion become 0.043A... and nothing changes.

anyone has a dump of the 2 eeprom ( from another laptop?) for me looks like a bios/EC issue.

I have same issue. I suspecting EC (ITE IT5571E-128) stucked at S0 state or firmware corrupted. Checked rails and physical damages on board but actually nothing wrong found. If you find something new write here pls bro.

[Assembler]

sorry boring again on this thread... i send messages to other users experiencing the same issue without any reply...
checked everything on the board ... switchings... magnetic sensor.. voltages.. everyhting seems ok...
the chipset is powered, the EC is powerred.. 3.3v and 5v are ok.. 1.8V is ok... no shorts... no burned things.. the 3.3 LDO is present...
pressing power button there is activity (3 restarts) .. but after a while the current consumtion become 0.043A... and nothing changes.

anyone has a dump of the 2 eeprom ( from another laptop?) for me looks like a bios/EC issue.

[Assembler]

bios from lenovo site:< ( IdeaPad 5 2-in-1 14IRH9 - Type 83KX)

[Assembler]

tried the BIOS. but no changes... like other users i have just the blinking red light (when battery is unpluged) .. the laptop is doing 3 restarts with 0.074 A at power on press... and after taht at something like 0.054 to 0.042 ... 3 restart and shutdown. with the battery the red light is not blinking stay white and after a while it just shutdown. damn!

ther serial point to IdeaPad 5 2-in-1 14IRH9 - Type 83KX

[Assembler]

Wow, very thank you! yes i'm using the TL8660II+ .. i will search for the topic about the lenght

[danito]

Hi i have a NB6837C_MB_V3 motherboard from a Lenovo (all voltages are ok..no shorts , cpu working) ,,,
these are the dumps of 16m and 8m eeproms.

can anyone made a working bios (just to exclude the BIOS as a cause of black screen)

try
your sn YX0BWCC0
next time check the length of the files. both are longer.
if you use xgecu you see there is a post here. don't save default, flash must be checked and save.

[Assembler]

hi the motehrboard model is NB6837C_MB_V3 (as written on post)
there are no stickers on the bottom cover... looking at the laptop visually it's look like a reversible ideapad 2 in 1 .. 14" ... and this topic semes related to an ideapad 2 1 14" with this motherboard. (i've no serial.. can be extracted from EC-BIOS dump?) . the customer don't have anymore the external shipping box.

i will check more infos about the correct model.

[SMDFlea]

Hi i have a NB6837C_MB_V3 motherboard from a Lenovo (all voltages are ok..no shorts , cpu working) ,,,
these are the dumps of 16m and 8m eeproms.

can anyone made a working bios (just to exclude the BIOS as a cause of black screen)

Type the laptop serial number, full name and model, motherboard model, etc.
read the forum rules..https://www.badcaps.net/forum/troubl...before-posting

[Assembler]

Hi i have a NB6837C_MB_V3 motherboard from a Lenovo (all voltages are ok..no shorts , cpu working) ,,,
these are the dumps of 16m and 8m eeproms.

can anyone made a working bios (just to exclude the BIOS as a cause of black screen)

[jey107]

bump

bios EC extracted from Lenovo website update for IdeaPad 5 2-in-1 14IRU9, IdeaPad 5 2-in-1 16IRU9
DMI 271000 - 272FFF in the EC bios

thank you for your support. I use RT809H programmer. i desolder and solder for bios read and write. your bios write was successfull but the computer had the same issue.
power button keeps blinking. it seems something else.

[peste]

bios EC extracted from Lenovo website update for IdeaPad 5 2-in-1 14IRU9, IdeaPad 5 2-in-1 16IRU9
DMI 271000 - 272FFF in the EC bios

[peste]

IdeaPad 5 2-in-1 14IRU9 NB6837C_MB_V3
SN YX0B0297
no display, power button blink

the 8 MB bios you sent also a 16MB one...you combined the 8MB bios...
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