Hi all, My HP Compaq 6710b was issued with a F.20- version BIOS, a version as we all know, can't be flashed with a changed, edited and modified own version, even downgrading is impossible with the tools we have at hand, such as HPQFlash etc.. This is not a desirable situation, so i've de-soldered the BIOS- chip (in my case a 25VF080B type, brand: SST, 8Mbit wide in a SOIC 200mil 8-pin outline/package). This little chip i've put in a SPI- programmer wich i've ordered off eBay (brand: Sofi, model: SP8-A). It's not an expensive device and comes with software, cables and a universal adapter kit. After installing the apropriate usb- driver and software next, my Windows 7 (64bit) system found it directly. I've read the chip and dumped the contents to disk. So far, so good. With a Hexedit (Winhex, latest build) i've compared the original HP downloaded rom- file, after unpacking the sp55553.exe file with 7-zip, with the one already residing on disk (the dumped one). It draw my attention that there was code wich matched, but also there where a lot of "y"'s in the HP file, where in my dumped rom there was code. Immediatly it was clear that one could not load the HP original file into the programmer and start programming. (I did just that and re-soldered the chip back, but the notebook didn't boot at all. So this is a dead end.) Next i tried to modify the SLIC- tables with the one that was posted here on MDL a while ago. Some code from that file wis indeed different then the one found in the dumped file. I changed that. Also i've flashed the BIOS- chip, but now a version with the modified SLIC- tables in it. You have already guessed it, no boot at all. Someone pointed out to me that after modification of the original dumped rom, the checksum of the whole "new" version rom had to be adjusted, logical it sounds, because some code has been changed therefore the initial checksum was not correct anymore. Now the problem, how on earth does one correct the faulty checksum of an edited rom? What tools are to be used? ...if there are any. I gave up... and soldered the original flash BIOS- chip (with the good F.20 code) back on the motherboard and assembled the notebook this afternoon. Yes, the notebook works, but still with the F.20 BIOS, with regret i'll have to say. I'am stuck, big time. One last idea springs to mind, maybe one of you girls or guys have tried to use the program flashrom under a Linux environment. Is this possible, because the HPQFlash.exe program works under DOS/Windows, maybe it is possible to circumvent this by using the mentioned flashrom program. Anyone? ...please? I'am anxious to hear your opinios about the <grrr> F.20 stuck bios flash thingy. Thank you kindly for your attention. B.T.W.: i have the original dumped rom available for experiments, if somebody is willing to give it a try to get those pesky SLIC- tables for Windows 7 activation in it. ...or revert back to for example the F.16 bios version.