Hi! I downloaded the new BIOS for my mothers Acer ES1-371 and began updating the microcodes, because this model is not in the list of devices Acer promises to update (Spectre mitigation). I also found donovan6000's tutorial via the Internet Archive Wayback Machine. I started the flasher and copied all files from C:\Users\USER\AppData\Local\Temp\7zSAB10.tmp\. The file isflash.bin is clearly the BIOS ROM. So I began modding... CPUID 406C3 and 406C4, both platform 01, are already integrated but outdated. I followed the tutorial and just pasted the new microcodes into the BIOS image. To proof if everything went well, I checked the BIOS with AndyP's Phoenix Tool (Allow Mods, No SLIC,...). The microcodes are in module 197DB236-F856-4924-90F8-CDF12FB875F3, but they get cut off and the rest is in PADDING_6. The unmodified ROM does not show this behaviour, microcodes are in 197DB236... and PADDING_6 ist just filled with 0xFF. So here's my question: Is this OK? Or am I stuck because the new microcodes are bigger? I already tried increasing the size of the microcode module and chortening the padding, but this results in "Error 6 - The arithmetic operation caused a buffer overflow.". Best Regards, Mr nUUb