@plutomaniac
can you help me out on this one?
I can extract the hdr file from the exe with phoenixtool or with the python script found online.
However, the resulting hdr file 23MB.
The spi component is a winbond w25q128FB. However I screwed the bios with flashing a corrupt dump.
I don’t have a clean dump anymore. So I tought that by extracting the rom from the hdr, I could flash that one back with my spi flasher.
The winbond chip is a 16mb part, so the 23mb of the hdr is obviously to big 
Attached the extracted (Z.version > dellhdr) E5770 BIOS.
Still waiting for a reply on this one…
Latitude_E5x70_Precision_3510_1.11.4_decompressed_section1_1.11.4.rar (4.39 MB)