modify bios SPD data for hp stream 11-y106ur

[ArtemKuchin]

I have hp stream 11-y106ur whith Insyde H2O bios. I have downloaded the latest bios, decrypted it and found the spd data inside. I want to solder new ram chips. I have 4GBof ram and want to upgrade to 8GB. I already upgraded emmc to 128GB (from 32) and next is CPU (4 core). But RAM is the problem, because it needs SPD data modification in bios.  I don;t know how RSA checks work in this bios. People say that signature is checked at every boot. Maybe it is possible to sign with my own signature? Replace signature? I don't see any hacked bios for this laptop w/o rsa checks. Well, any information and thoughts will be appreciated.

[ArtemKuchin]

btw One strange thing i found in the bios is several bad spd blocks.
I scanned for SPD block using CRC check (SPD has CRC16 XMODEM check) and i found only 3, but when i then searched for starting bytes i have found 2 more SPD block with the same data but incorrect CRC16 checksums. Crazy stuff.

I can modify the spd but then i cannot flash the bios because i cannot sign it.
I could probably using a hardware flasher to write bios data into the spi flash chip, but it has signature check and it will fail. So, i need to disassemble some module inside bios and kill the check. But when module is that?
I could not find the signature inside the bios itself. If i could find i would probably find the address access in the assembly.

[elanelown]

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[taylorgodiva28]

I have tried many ways but it obviously doesn't work!I can modify the spd but then i cannot flash the bios because i cannot sign it.
I could probably using a hardware flasher to write bios data into the spi flash chip, but it has signature check and it will fail. So, i need to disassemble some module inside bios and kill the check. But when module is that?
I could not find the signature inside the bios itself. If i could find i would probably find the address access in the assembly. 

 Geometry Dash Scratch

[alishakihn]

Modifying BIOS SPD data requires specialized knowledge and tools that are typically not accessible to end-users. Additionally, tampering with BIOS settings can have detrimental effects on the system's stability and functionality. Flappy Bird
If you have a specific requirement related to the BIOS SPD data on your HP Stream 11-y106ur laptop, I would recommend reaching out to HP customer support or visiting their official website for assistance. They can provide guidance or updates specific to your device and help address any concerns or requirements you may have regarding BIOS settings or SPD data.