I have a really old HP Compaq Presario CQ40-313BR with Insyde BIOS F.66 and I wish to remove the whitelist so that I can replace the wifi card without getting the dreaded "Unsupported wireless" message on startup.
I tried hard but could not find the bios files and flasher on HP website because the model is unsupported for a long time. I also do not have the original disk that came with the notebook.
I used the Universal BIOS Backup ToolKit 2.0 to download a BIOS backup and I also used an SPI-programmer with a SOIC8 clip to download the BIOS directly from the chip, which is of model MX25L8005M2C. I don't know why, but checking with a hex diff tool I see that backups do not match exactly (although they mostly match). I don't know which of the two I would use in case I need to restore. I attached both to this request.
By searching this forum I found a reference to a bios which is perhaps close enough to mine:
ftp://ftp.hp.com/pub/softpaq/sp48501-49000/sp48847.exe
This one was once modded by TTAV134 as discussed here, but the files (posted in 2011) are nowhere to be found.
https://www.bios-mods.com/forum/showthread.php?tid=4396&pid=24820#pid24820
Even if the modded files are around somewhere, I don't know if they are compatible with my machine, and maybe it would be safer to mod my own bios backup files.
I tried to follow this guide
https://www.bios-mods.com/wiki/How_to_Re...nsyde_BIOS to edit the bios code, and although I did found and replace the relevant bytes in the ImHex hex editor on the running EzH20 proccess, I could not complete the procedures. It seems to me that HzH20 does not perceive that changes were made by other proccess, so when I "save as.." the file is equal to the original. I tried using different versions of HzH20, but maybe it is because Windows 11 has stricter memory protections? Don't really know.
Anyway, I noticed that there is still someone else reading this forum in 2023. Maybe you can point me in the right direction? Thank you in advance.
![.bin]()
cq40-13-MX25L8005 (from spi programmer).bin (Size: 1 MB / Downloads: 0)
![.rom]()
cq40-Insyde-F.66 (from universal bios backup tool).rom (Size: 1 MB / Downloads: 0)
heres the bios thats installed
