Dell Latitude 5520 need bios for it

[laptopcongminh]

Dell Latitude 5520

My computer is stuck on the Dell logo. Can you help me rebuild it?

Dell 19819-1

service tag: DN7DMG3

[LBTT1121]

Dell Latitude 5520

My computer is stuck on the Dell logo. Can you help me rebuild it?

Dell 19819-1

service tag: DN7DMG3

try and feedback

[laptopcongminh]

try and feedback

it comes on but hangs on Dell logo

[piore.szczypiorek]

hi try

Hi, Thanks very much. Works good!!! You're GREAT!

[empm_repmex]

Do you guys have the U7103 bin? U7201 (TPS65994) TBTA_VBUS20 output is on a loop from 3v - 5v and drops to 0v, I suspect the firmware of the PD chip is corrupted, but here is the backup

DELL 5520
REG MODEL: P104F
EX: 3358529896
ST: 1JJKY93

[SMDFlea]

Do you guys have the U7103 bin? U7201 (TPS65994) TBTA_VBUS20 output is on a loop from 3v - 5v and drops to 0v, I suspect the firmware of the PD chip is corrupted, but here is the backup

DELL 5520
REG MODEL: P104F
EX: 3358529896
ST: 1JJKY93

Check your CPU , according to the laptop configuration based on the service tag your CPU is an i5-1135G7 Tiger Lake.

Comet Lake firmwarehttps://www.badcaps.net/forum/troubl...00#post3707500

Tiger Lake firmware https://www.badcaps.net/forum/troubl...17#post3707517

[mbusoluju]

GOOD DAY , I LOST THE BIOS BIN, ORIGINAL FOR DELL LATITUDE 5520,
SN NUMBER: 2NNHJS3
REG TYPE NO: P104F001
EXT:5783736675

[LBTT1121]

GOOD DAY , I LOST THE BIOS BIN, ORIGINAL FOR DELL LATITUDE 5520,
SN NUMBER: 2NNHJS3
REG TYPE NO: P104F001
EXT:5783736675

try post 104

[ali akbar]

dell latitude 5520
st-22RXB93
NO SISPLAY
clean please

[Markus1741]

dell latitude 5520
st-22RXB93
NO SISPLAY
clean please

Hello try ....

[ali akbar]

thanks boss working good

[modd1uk]

Hi guys, having an issue with a 5520 and could do with a little advice.

The BIOS is locked, I've dumped it, unlocked it (with two different software, rex's and the dellbios tool), written the unlocked file to a new chip but the laptop just turns on and power cycles, it will not stay on.

Remove the chip, resolder the original locked BIOS chip and laptop turns on first time...it's just locked, it seems the 8FC8 unlock tools are corrupting the image?

[LBTT1121]

Hi guys, having an issue with a 5520 and could do with a little advice.

The BIOS is locked, I've dumped it, unlocked it (with two different software, rex's and the dellbios tool), written the unlocked file to a new chip but the laptop just turns on and power cycles, it will not stay on.

Remove the chip, resolder the original locked BIOS chip and laptop turns on first time...it's just locked, it seems the 8FC8 unlock tools are corrupting the image?

Load unlock bios into original IC,

[modd1uk]

Load unlock bios into original IC,

Can you help me understand why this would be any different than loading the unlocked BIOS into a new IC with the same chip number? 25r256jven.

Surely the unlocked file should work on a brand new identical IC?

[SMDFlea]

Can you help me understand why this would be any different than loading the unlocked BIOS into a new IC with the same chip number? 25r256jven.

Surely the unlocked file should work on a brand new identical IC?

Should do.

The BIOS is locked, I've dumped it, unlocked it (with two different software, rex's and the dellbios tool)

The dellbios tool might be the problem. Patch it only with rex98`s tool.

[modd1uk]

Should do.



The dellbios tool might be the problem. Patch it only with rex98`s tool.

Tried it with both, I'll upload the original locked and rex's unlocked / dellbios tool unlocked for you to have a look at.

I have noticed the rex's tool and dellbiostool both changes the correct values but the dellbios tool unlock has some 00 00 after the unlock whereas rex's doesn't.

I'll get the files uploaded for you to see what I mean, thanks for the advice though I appreciate it.

[SMDFlea]

Tried it with both, I'll upload the original locked and rex's unlocked / dellbios tool unlocked for you to have a look at.

I have noticed the rex's tool and dellbiostool both changes the correct values but the dellbios tool unlock has some 00 00 after the unlock whereas rex's doesn't.

I'll get the files uploaded for you to see what I mean, thanks for the advice though I appreciate it.

If you can just post the original bios backup and the service tag

[reformatt]

Have a Dell 5520 that is power cycling every 10 secs or so. Don't know the history as it was bought off a reseller as dead. Does look to be corrupted BIOS, as I get Vcore etc and looping stops if I remove the RAM. Backup attached. It will power on only from battery, not from USB-C (although I'm not using a Dell charger so probably doesn't like my USB supply, typical Dell thing). If someone could give me a clean BIOS for it, it would be appreciated.

Service Tag is 816X4B3

[hoaca388]

Have a Dell 5520 that is power cycling every 10 secs or so. Don't know the history as it was bought off a reseller as dead. Does look to be corrupted BIOS, as I get Vcore etc and looping stops if I remove the RAM. Backup attached. It will power on only from battery, not from USB-C (although I'm not using a Dell charger so probably doesn't like my USB supply, typical Dell thing). If someone could give me a clean BIOS for it, it would be appreciated.
Service Tag is 816X4B3

Latitude 5520_TGL
Service Tag: 816X4B3

[reformatt]

Latitude 5520_TGL
Service Tag: 816X4B3

Absolutely perfect. Applied and working. Thanks for having all the ME firmware and BIOS up to date as well.