[REQUEST] Dell Inspiron 15R 5520 BIOS Unlock

[ascii79]

Can you please re upload the mod once more.

[th3boss]

Bios Specs:

InsydeH20
A14

This is the link to the official bios download:

Dell Support Bios Official Driver Link

Thank you so much for assistance, pm me or respond, ill get back to you with anything you may need pretty quickly, willing to make donation to helper, please only reply if you either:

- Done this before
- Experienced ( High Post count on forum )
- And / Or moderator

[Swinger]

0x86178 Form Set: Boot {0E A7 F4 27 4A A0 00 DF 42 4D B5 52 39 51 13 02 11 3D 58 00 04 00 01 71 99 03 93 45 85 04 4B B4 5E 32 EB 83 26 04 0E}
0x8619F Guid: 0F0B1735-87A0-4193-B266-538C38AF48CE {5F 15 35 17 0B 0F A0 87 93 41 B2 66 53 8C 38 AF 48 CE 03 01 00}
0x861B4 Guid: 0F0B1735-87A0-4193-B266-538C38AF48CE {5F 15 35 17 0B 0F A0 87 93 41 B2 66 53 8C 38 AF 48 CE 04 00 00}
0x861C9 Default Store: en-US 0x0 {5C 06 00 00 00 00}
0x861CF Var Store: 0x1234[900] (SystemConfig) {24 23 F4 27 4A A0 00 DF 42 4D B5 52 39 51 13 02 11 3D 34 12 84 03 53 79 73 74 65 6D 43 6F 6E 66 69 67 00}
0x861F2 Var Store EFI: 0x1 {26 18 01 00 61 DF E4 8B CA 93 D2 11 AA 0D 00 E0 98 03 2B 8C 07 00 00 00}
0x8620A Form: Boot, Form ID: 0x1 {01 86 01 00 58 00}
0x86210 Suppress If: {0A 82}
0x86212 True {46 02}
0x86214 Setting: Boot Type, Variable: 0x79 {05 A6 28 00 29 00 5E 10 34 12 79 00 04 10 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
0x8623A Option: Dual Boot Type, Value: 0x0 (default) {09 0E 2A 00 10 00 00 00 00 00 00 00 00 00}
0x86248 Option: Legacy Boot Type, Value: 0x1 {09 0E 2B 00 00 00 01 00 00 00 00 00 00 00}
0x86256 Option: UEFI Boot Type, Value: 0x2 {09 0E 2C 00 00 00 02 00 00 00 00 00 00 00}
0x86264 End of Options {29 02}

It seems Yo get UEFI on EFI IFR !
Can You upload the Menu Tabs Screenshots about Setuputility ?
More pics is better, thanks !
Let me know
Regards

Hello, I'm owner of this laptop too. I've been looking for bios-mod for years. If you still have a copy of it, I would be glad if you send it to me.

[karan316]

Please upload the unlocked bios one again.........

[av_pavan4u]

Hi Gurus,

I am approaching you for a thing which may be a simple thought and will take days to figure out for me.

I am writing the modded BIOS to chips by CH341A programmer every time and am desperately trying since three weeks to be able to perform BIOS modifications through FPT.

I have removed the Descriptor lock by using FITC.

Next, I did two changes to PchBiosWriteProtect suggested by Coderush Changing 0xFE to 0xFF and Changing 0x20 to 0x00. But, no luck still getting the error "Error 28: Protected Range Registers are currently set by BIOS, preventing flash access. Please contact the target system BIOS vendor for an option to disable Protected Range Registers." when I try to execute 1. fptw64 -d dump.bin 2. fptw64 -f dump.bin.

Next, I did replace the test statements with 4831C0 in PCHinitDXE at two places at BPL register comparision 40 84 28 -> 48 31 C0 and at BiosLock comparision F6 00 10 -> 48 31 C0. But, still no Luck.

I even disabled Intel Anti Theft, patched it by UEFIPatch and wrote it through programmer. Again, no luck.

Please find the latest bios dump(
  outimage.bin (Size: 6 MB / Downloads: 12) ) attached to thread. 

System BIOS version : A14
System Model : Inspiron 15R N5520
Chipset :- HM77 Mobile
CPU: i7-3632Qm

Can you please tell me if I am doing something wrong or help me unlock the BIOS to be able to write from windows cmd and also help me unlock the Hidden menus please.

Thanks in Advance for your suggestions/inputs.

Pavan.

[av_pavan4u]

Hi Gurus,

Wish you a Prosperous and Happy new year. Also hope enjoyed the Christmas as well!

Any pointers please and eagerly waiting for a reply.

Pavan.

[av_pavan4u]

Hi All,

No pointers given so far. Eagerly waiting for your direction. Hope, someone can help me.

Thanks in Advance for your suggestions/inputs.

Pavan.

[momenthe]

Hi,

First of all, I need to tell you this, my laptop is actually Dell 7520 but my bios chip was corrupted (beeping) and they replaced it with 5520 chip. Everthing works fine but except switchable graphics. When I install AMD driver, both my cards are disabled. Like I never installed their drivers, I can't use them. Anyway, I did some research and I guess I can fix this issue with unlocked bios by changing them manually.

BUT if we can change my current bios software with 7520's bios software. I think that would be the best solution but I am not sure if we can the main bios chip software.

What should I do for the best solution? And how can I get the neccessary infos of my current BIOS software to provide you?

[darkliself]

plz upload this moded bios for dell 5520

[Dudu2002]

plz upload this moded bios for dell 5520

Hi
run tools https://www.sendspace.com/file/i30hum , make bios damp and report