KeeYees SOP8 SOIC8 Test Clip and CH341A USB Programmer Flash for Most of 24 25 Series BIOS Chip with PDF Tutorial

Love this little tool. Wish I had more excuses to use it. A friend locked themselves out of their laptop by setting a BIOS password that they couldn't remember. I cleared the CMOS memory several times, but the password persisted.I did some research and learned that modern laptops don't store BIOS passwords in CMOS. Instead, they are stored in non-volatile memory, such as the eeprom on the BIOS chip itself. Further research indicated that this particular laptop likely used an AMI BIOS implementation, and that the password could likely be decrypted or cleared.I happened to have this tool on hand and was itching for a reason to use it. I had never used a BIOS programmer before, so I read a few guides, identified the BIOS chip, and downloaded and reviewed its datasheet. I booted Ubuntu on another laptop and installed flashrom. I verified that flashrom was compatible with the BIOS chip. I hooked up the clip, and flashrom recognized the chip on the first attempt.I dumped the ROM three times and confirmed the checksums for each dump matched. I used UEFITool and confirmed that I was looking at an AMI BIOS and that the AMITSESetup variable was present. I found a tool on GitHub named AMITSESetup Decryptor & Unlocker that was unable to decrypt the password, but it did clear the password from the ROM dump. I flashed the modified ROM back to the BIOS chip, and much to my surprise I was able to boot the computer with no issues and no BIOS password prompt!

A bunch of people said this requires some modification to make it compatible with 3.3V chips due to a "design flaw" (which i regrettably did because it was easy enough) but they're wrong. What happened is that some idiot with a multimeter saw 5.0V going to the pins and had themselves a freakout without checking amp draw (which is less than a milliamp). And then a bunch of other people including pseudo electronics geniuses started blindly repeating this falsehood, wasting everyone's time.What's important is that the voltage drops to 3.3V without any modification whatsoever when you're actually performing read/write operations on a 3.3V chip. For the reviewers saying not performing the modification fried their 3.3V chip with such a small amp draw, my best guess is that they had the bios in the wrong slot, the pins lined in the wrong order, or the clamp was simply not making good contact as they're notorious for, and after reading a bunch of "must modify or else" comments they probably assumed their chip must have "fried".Electronicsrepairschool on youtube explains the issue quite well. Although his videos are a little long winded for my taste at least he knows what he's talking about.I flashed 2 winbond motherboard bioses, one with the mod and one without and both processes worked just fine. I did not use the clamp because all indications are that it's a bit flakey and the 2 chips i flashed were the removable kind.

Would give a 5 but packaging wasn’t great one of chips were broke, another had bent prongs, unsure if can be bent back without breaking, other than that though delivery was fast and did include all items and seems to be working perfectly so far!

It took a lot of Youtubing and guess work to use. However, this small price to pay here did everything I needed it to in order to get my expensive gaming laptop back together and reset the bios.I will say that I have a moderate knowledge around computers, and I am very willing to trial and error my way through a project. That being said, sending in my PC would of been $1000 out of warranty to get it fix. I did it myself and spent 2 weeks troubleshooting which got me to hear and only having to pay for this to fix my issue after ripping my laptop open myself.I would recommend going online to find the most up to date software to use for this.

I bought geekstory and found the experience with alligator grip miserable and have been enjoying how much easier this one was