Re: Dell Latitude E5550 FW status recovery error & unable to reboot
Right. I have extracted the BIN files from the executable, not my actual BIOS yet.
I haven't identified the correct chip yet from the boardview/schematics yet.
Is there an easy way to tell which one it is? There are two 8 legged Winbond chips that are connected to the CMOS battery, however one of them is for 32bit and the other for 64?
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Re: Dell Latitude E5550 bios needed
Which physical chip is it on the motherboard of this laptop?
I'm trying to make a dump/reflash using an SPI programmer.
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Re: Dell Latitude E5550 FW status recovery error & unable to reboot
Thanks but that is the one thing that didn't work. That executable forces a reboot which then gets permanently stuck. Also running it from the boot menu, or even FreeDOS, they all require a reboot before the bios is flashed.
I've also tried extracting the BIOS bin files using Dell_PFS_Extract and that produces 10 different bin files. I assume the BIOS needs to be flashed with one BIN file if using an SPI programmer right? It looks like it will have to be done this way....Last edited by a_tiny_ant; 12-11-2021, 02:07 AM.
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Dell Latitude E5550 FW status recovery error & unable to reboot
Hi everyone
Since a month or so my laptop, a refurbished Dell Latitude E5550, has been unable to exit sleep mode or properly reboot. Upon waking from sleep mode it shuts down and reboots and upon attempting a reboot it just hangs at a black screen forever. The laptop was working fine for several years up until a month ago.
Initially I thought it was OS related, since it's running Arch Linux, wouldn't be the first time an update broke something but it also happens on Windows, Ubuntu live images and even a complete restored image from a year ago where it definitely worked...Last edited by a_tiny_ant; 12-10-2021, 04:13 PM.
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Re: Question about solder paste vs solder balls
I think solder paste is easier to work with, since it's essentially many small balls suspended in flux. It sticks easily and the flux helps a lot in making a proper solder bond. You do need to keep in mind that it has less actual solder in it because flux makes up a large part of the volume.
As for longevity, it shouldn't matter if a proper solder bond is formed. Flux helps a lot.
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