need bios for asus e402na rev 2.1

[hamodeh]

hi
i need bios for asus e402na rev 2.1 please

[eikspaj]

Re: need bios for asus e402na rev 2.1

it would be cool if you can post the original bios....
but try this

[lrservicios]

Re: need bios for asus e402na rev 2.1

it would be cool if you can post the original bios....
but try this

This BIOS is not working, i have a passwored working BIOS here i attach

[jdy]

Re: need bios for asus e402na rev 2.1

I know a few years have passed but I need it and I did not find it here, I collaborate by leaving it, it works perfect at least on ASUS E402NA REV 2.3


i think may work on other by his name "ASUS E402NA 304"

[kalisko]

Re: need bios for asus e402na rev 2.1

Here's a brother

[grefaldia]

please help me asus bios bin e402na rev 2.3

need to this bios bin file because loptop is no display but have power.

[kalisko]

Re: need bios for asus e402na rev 2.1

Here, let me help a little too

This is a bios for the Asus E402N that works - it works OK !!

MB: E402NA Rev. 2.1
SR2Z7 N3350 processor

Not the same as the one I sent in the previous post !!!!!!

bios is OK, maybe someone needs that .....

Greeting

[coelectron]

Re: need bios for asus e402na rev 2.1

Here, let me help a little too

This is a bios for the Asus E402N that works - it works OK !!

MB: E402NA Rev. 2.1
SR2Z7 N3350 processor

Not the same as the one I sent in the previous post !!!!!!

bios is OK, maybe someone needs that .....

Greeting

No working, power on, but without video.

[peste]

Re: need bios for asus e402na rev 2.1

No working, power on, but without video.

posts the original laptop bios

[AXY]

Need ec bin file for asus e402na rev2.3

Hello everybody
i need ec bin file for programming io chip it 8995 on asus motherboard e402na rev2,3
thanks

[Rainbow]

I have Asus E402NA REV. 2.3 that's completely dead. No LEDs, not charging, not powering up. +5VA and +3VA are present. I've desoldered the flash and it's completely empty. Only FFh everywhere. Maybe the IT8995E-128 is empty too?

[SMDFlea]

I have Asus E402NA REV. 2.3 that's completely dead. No LEDs, not charging, not powering up. +5VA and +3VA are present. I've desoldered the flash and it's completely empty. Only FFh everywhere. Maybe the IT8995E-128 is empty too?

What model is your programmer and software version. What part number is etched on the bios chip. Is the chip in the programmers support list

[Rainbow]

Flashed dump from ASUS E402NA.304.rar. Laptop powered up and boots! The EC internal flash is probably OK. Maybe it reads code from SPI flash.

[Rainbow]

The "dump" in ASUS E402NA.304.rar is the same as 304 BIOS from Asus website (minus the first 2048 bytes). WBT.exe does not seem to work. Do I need a real dump for that? Can WBT also set windows product key or should I use something other (UEFITool)? I extracted it from installed Windows.

[SMDFlea]

The "dump" in ASUS E402NA.304.rar is the same as 304 BIOS from Asus website (minus the first 2048 bytes). WBT.exe does not seem to work. Do I need a real dump for that? Can WBT also set windows product key or should I use something other (UEFITool)? I extracted it from installed Windows.

If you have a bios backup it can be copied to the new bios using a hex editor

[Rainbow]

No backup, unfortunately. The flash was blank.
I've downloaded two real dumps here - "E402N.rar" and "sus E402MA ORI.rar". They're versions 302 and 301 so they can't be compared completely. However, the differences reveal location of serial numbers and product keys - I'll probably just change them using a hex editor and copy the area to the new BIOS.

[Rainbow]

To fully restore system IDs, the AsusGpnv region must be recreated (if it can't be copied from a corrupt BIOS). Start of AsusGpnv area (Base: 3E2000h) and size (10000h) can be found using UEFITool NE: Intel Image -> 2nd BPDT region -> Secondary BPDT -> OB -> AsusGpnv
Also the BIOS from web has unlocked descriptor (replace first 4KB from some dump).

AsusGpnv contains:

• MAC address to show in BIOS - from the smaller sticker on the back of the board or from the network interface - it's stored inside RTL8402 (eFuse) and thus correct even with empty AsusGpnv
• UUID - can be found in Windows registry - as a key in HKLM\SYSTEM\HardwareConf
• some 12-digit number starting with 15, maybe some timestamp
• machine part number (90NB0C5x-Mxxxxx format)
• unknown BN09A or BN08 string
• Windows product key
• BIOS version (E402NA.304)
• machine serial number (XXN0CV00V000000 format) - from the sticker on the bottom cover
• board serial number (N0CV0000MB0000000 format) - from the bigger sticker on the bottom side of board

If Windows is installed, search for MFG0 in pagefile.sys to find partial copies of the AsusGpnv area. Very useful for the 12-digit number, part number and BN09A/BN08 string as they don't seem to be available anywhere else.

I've created AsusGpnv template (attached) from the dump in E402n.rar file - replaced the data by placeholders. The following script fills the template using real data - edit it first with your data:

#!/bin/sh
# start of AsusGpnv area (Base: 3E2000h) and size (10000h) found using UEFITool NE: Intel Image -> 2nd BPDT region -> Secondary BPDT -> OB -> AsusGpnv
cp AsusGpnv-template.bin AsusGpnv-filled.bin
# MAC address (binary) - to show in BIOS (from the smaller sticker on the bottom side of board)
# the real one is stored inside RTL8402 (eFuse) - it's correct even with empty AsusGpnv
LC_ALL=C sed -i 's/MMMMMM/\x00\x00\x00\x00\x00\x00/g' AsusGpnv-filled.bin
# 04 03 02 01 06 05 08 07 09 10 11 12 13 14 15 16 = UUID (01020304-0506-0708-0910-111213141516) - get from installed Windows - keys in HKLM\SYSTEM\HardwareConfig
LC_ALL=C sed -i 's/UUUUUUUUUUUUUUUU/\x04\x03\x02\x01\x06\x05\x08\x07\x09\x10\x11\x12\x13\x14\x15\x16/g' AsusGpnv-filled.bin
# unknown number, maybe timestamp (search for MFG0 in pagefile.sys)
sed -i 's/NNNNNNNNNNNN/150000000000/g' AsusGpnv-filled.bin
# machine Part Number (search for MFG0 in pagefile.sys)
#90NB0C51-Mxxxxx = red
#90NB0C52-Mxxxxx = white
#90NB0C53-Mxxxxx = black
# some part numbers found on web
#90NB0C52-M00170 = F402NA-GA015T
#90NB0C52-M00180 = L402NA-FA016TS
#90NB0C52-M00480 = ?
#90NB0C52-M00750 = F402NA-GA015T or E402NA-GA001T
#90NB0C52-M02250 = ?
#90NB0C52-M02880 = E402NA-FA021T
#90NB0C52-M03090 = E402NA-GA167T
#90NB0C52-M04280 = F402NA-GA208T
#90NB0C52-M05110 = E402NA-GA248T
#90NB0C52-M05850 = ?
#90NB0C52-M06080 = L402NA-GA290TS
sed -i 's/PPPPPPPP-PPPPPP/90NB0C52-M00000/g' AsusGpnv-filled.bin
# BN09A or BN08 = ??? (search for MFG0 in pagefile.sys)
sed -i 's/YYYYY/BN08\xff/g' AsusGpnv-filled.bin
# Windows product key (get from installed Windows using ProduKey64)
sed -i 's/XXXXX-XXXXX-XXXXX-XXXXX-XXXXX/00000-00000-00000-00000-00000/g' AsusGpnv-filled.bin
# BIOS version
sed -i 's/E402NA.VVV/E402NA.304/g' AsusGpnv-filled.bin
# machine serial number (from the sticker on bottom cover)
sed -i 's/SSSSSSSSSSSSSSS/XXN0CV00V000000/g' AsusGpnv-filled.bin
# board serial number (from the bigger sticker on the bottom side of board)
sed -i 's/BBBBBBBBBBBBBBBBB/N0CV0000MB0000000/g' AsusGpnv-filled.bin

Script to replace descriptor and AsusGpnv in 304 BIOS (E402NA-AS.304.bin is E402NA-AS.304 from Asus web with first 2048 bytes removed, descriptor-from-dump.bin is first 4096 bytes from dump in E402N.rar):

#!/bin/sh
dd if=E402NA-AS.304.bin of=part1.bin bs=1024 skip=4 count=3972
dd if=E402NA-AS.304.bin of=part2.bin bs=1024 skip=4040
cat descriptor-from-dump.bin part1.bin AsusGpnv-filled.bin part2.bin >E402NA-AS.304-modded.bin

After flashing E402NA-AS.304-modded.bin, go to BIOS, load defaults and also provision the default secure boot keys. Finally upgrade the BIOS to 317 (using ASUS EZ Flash 3 utility in BIOS).

[SMDFlea]

Great job :-)