Re: Acer Aspire R5-571TG P5HCJ r1.2 schematic and boardview
Thank you and thanks to pooya_pm for sending me another one in PM.
Here is schematic for Skylake platform....
TTR
Member
Last Activity: 02-22-2025, 12:37 PM
Joined: 04-08-2020
Location: Szczecin
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Last edited by TTR; 07-27-2023, 09:53 AM. -
Acer Aspire R5-571TG P5HCJ r1.2 schematic and boardview
Hi,
Does anybody here have and could share schematics and boardview for Acer Aspire R5-571TG, motherboard code is: Pegatron P5HCJ r1.2 -
Re: Surface pro 4 bios repair
Hi
I have surface pro 4 with i7-6550u CPU
The problem is tablet cannot update ME Region via windows update
After the restart i have surface logo and tablet is trying to update ME region but restarts.
After looking in the device manager I have an exclamation mark in surface ME and code 10.
I dumped the contents of bios via a programmer and tried to clean ME region in FIT but got the following error message.
If someone could clean me region for me it would be great.
Thank you...Leave a comment:
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Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal
I can confirm that autopatcher does not work with Lenovo p52(8th gen).I read dump twice compare it using HXD.
After patching and writing patched dump to eeprom i get nothing on the screen and laptop plays error melody.Leave a comment:
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Re: HP Envy X360 Laduree 1.0 MB 14257-2 turns on and off
I have tried with 2 different know good hp 65w chargers and got the same results.
Later I connected board to lab power supply with a prepared HP cable with resistor between + and ID pin which simulated 90w power supply...Last edited by TTR; 09-26-2022, 02:01 PM.Leave a comment:
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Re: HP Envy X360 Laduree 1.0 MB 14257-2 turns on and off
PU4402
S-D 340k
D-S 340k
D-G 290k
G-D 290k
S-G 125k
G-S 125k
PU4403
S-D 235k and rising
D-S 235k and rising
D-G 400k and rising
G-D 400k and rising
S-G 100k
G-S 100k...Leave a comment:
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Re: HP Envy X360 Laduree 1.0 MB 14257-2 turns on and off
Can't find ACDRV pin on my charger IC.
I'll attach a part of schematic with my charging ic.
On the gate of PU4402 and PU4403 I have 6.5V...Leave a comment:
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Re: HP Envy X360 Laduree 1.0 MB 14257-2 turns on and off
Any ideas ?Leave a comment:
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Re: HP Envy X360 Laduree 1.0 MB 14257-2 turns on and off
Schematic is available link is down below
[url]https://drive.google.com/file/d/1CxX5AHYQh4OHhXtaVjDjnfwJchV4hgRl/view[/url]
Here are my measurements
5 - ACOK#- 0v
6 - ACDET- 2.6v
20 - VCC- 19.4v
16- REGN- 6vRe: HP Envy X360 Laduree 1.0 MB 1425....6v<br /> 20 -Leave a comment:
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HP Envy X360 Laduree 1.0 MB 14257-2 turns on and off
HP Envy X360
Motherboard:Laduree 1.0 MB 14257-2
CPU:SR23W i7-5500U
KBC:ENE KB9028Q C
At first, the board was dead no lights nothing after connecting the charger.
After visual inspection, I noticed damaged components in the charging circuit:
PR4408, PR4415, PR4416, PU4406
I replaced them (including high side and low side MOSFETs PU4406 and PU4405).
Later on the 20th leg of the charger, I still had low resistance, so I replaced the charger chip
After replacing the charger chip I have a white led when I plug the charger.... -
Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal
Make sure all legs of IC are soldered solid to the pads.
Turn on with disconnected CMOS battery and taped anti-tamper switch and also with the disconnected hard drive....Leave a comment:
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Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal
Try and report back...Leave a comment:
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Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal
I would like to add that I had the anti-tamper switch taped and CMOS battery disconnected.
Later I tried to boot with a previously locked hard drive but without any success
After patching laptop always does 2x 5 beeps and the screen remains black.
Sorry for not editing my yesterday post, but the edit button is gone for some reason....Last edited by TTR; 07-28-2022, 10:55 AM.Leave a comment:
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Re: LENOVO BIOS AUTO-PATCHER for Supervisor Password Removal
Hi.
Thank you for this tool. I've got many successes with unlocking T470 and T460s so far.
Today I have Lenovo T540P with 2 spi chips, after reading some posts from this thread I've desoldered the 4MB chip read it and put it in the Autopatcher and flashed it with patched file.
After powering up the laptop I have a blank screen with 2x 5beeps.
I flashed my original file back and everything is back to normal.
It would be great if someone could look into my original file and try to patch...Last edited by SMDFlea; 03-25-2023, 11:57 AM.Leave a comment:
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Re: Lenovo ThinkPad Edge E531 BIOS
I can confirm that this dump is working. I didn't need to flash ec firmware though.
Thank you...Leave a comment:
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Re: Need BIOS - Lenovo Yoga 2 Pro 20266 EBKN7
Hi
I can confirm that this bios is working fine.
Thank you for sharing...Leave a comment:
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Re: LENOVO THINKPAD T450 shematics
Thank you for the schematic.
Anybody have board view for the NM-A251 board?Leave a comment:
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Re: Remove_SMM... UEFI.
Thank you works like a charm
Thnaks for the hint, based on dump modified by dani it's offset from 0x330 to 0x360....Leave a comment:
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Re: Remove_SMM... UEFI.
Hello,
I'm not sure if my request fits this topic or should i create a new one.
Anyway, I have a Lenovo T520 with Computrace enabled.
I tested a few things and came to the conclusion that Computrace enable/disable bit is located in 24rf08 IC. I read my ic and downloaded another dump with computrace disabled from the internet copied my serial number to that dump and flashed my ic.
Computrace was gone, but now I have a 0189 RFID error each time I boot the laptop up, so flashed back to my original dump and everything went...Last edited by SMDFlea; 04-01-2023, 08:02 AM.Leave a comment:
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Re: Bios bin for Lenovo L540 LPD-1 MB 12290-2 48.4lh03.021
Just wanted to update that your file is working fine, but I've got a different issue with the board(changed CPU and board boots fine)....Leave a comment:
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