GSC Debug Board (aka "Chromebook Debug Cable" / "SuzyQ", for Cr50 / Ti50)

$10.28 Buy It Now or Best Offer
free,30-Day Returns

Seller Store chromebook_kid
(24) 100.0%,

Location: Pleasanton, California
Ships to: US,
Item: 335130747039

All returns accepted:ReturnsNotAccepted
Unbranded:Unbranded
Type:Board
Compatible Model:Chromebook
Connectivity:USB-C
Compatible Product:Chromebook

Make sure that your chromebook supports CCD (Closed Case Debugging) before ordering this debug board. Using this debug board will probably void your chromebook’s warranty. The seller does not take any responsibility for damage caused by this product, including software, firmware, and hardware damage.Use cases for this debug boardDisabling firmware write protection on your chromebook without having to open it up.Unbricking your chromebookThis debug board is especially useful for Chromebooks that are hard to open up like the Pixelbook and Pixelbook Go. Note: The GSC Debug Board requires a USB-C cable which can do Data Transfer. Most USB-C chargers that come with phones are compatible with this product. A quick way of testing if your cable is compatible is to try accessing your phone’s files through your chromebook by connecting your phone and Chromebook with the cable. If you don’t have a cable then you can buy it as a variation of this item.Mission StatementProvide cheap, reliable Chromebook debug boards to as many customers as possible in a fair, transparent way. The price of this product is determined by the costs to make the product. No extra profit is kept. I design / order PCBs in bulk so everyone can have the lowest price possible, so that customers know they are getting the lowest, fairest price.Questions you may ask:How do I check if this board will work with my chromebook?Search “developer information for chrome os devices” online and go to the ChromiumOS web page. If your device says “Yes” in the “Closed Case Debugging” category then this board will work with your chromebook. Another way to check is to run `sudo gsctool -a -I` on your Chromebook. To run the command on ChromeOS, you must be in developer mode and stable channel. Open crosh (Ctrl + Alt + T), then type “shell”, then you can run the command. Make sure your Chromebook is not enrolled (enrolled means managed by a school or organization). This board will not work on enrolled devices. How do I use this board to disable firmware write protect?For this step, you do not need to have a debug cable plugged in. Note: After running the command, your Chromebook will return to not-developer mode, erasing all user data on your Chromebook. Run `sudo gsctool -a -o`. The command will say “Press PP button now!” Whenever it says that, press the power button on your Chromebook. Keep pressing the power button when needed until the command successfully completes. It will take around 3 minutes.Re-enter developer modePlug in your USB-C cable into the debug board, orientation does not matter. Plug the debug board into the left USB-C port of your chromebook, Side A up. Plug the other end of your chromebook into a different USB port on your chromebook or into a USB port of a linux computer. On the linux computer which you plugged the cable into (which is your Chromebook if you plugged the board into your Chromebook) and run this command: `watch -n 1 ‘lsusb | grep -E “18d1:5014|18d1:504a”‘`. The command will show all connected Cr50 or Ti50 USB devices every second. You should see a device called “Cr50” or “Ti50”. If you don’t, try plugging the debug board in with Side B up. If that still doesn’t work, try all other USB-C ports on your chromebook with both Side A and Side B until it works. If you’ve tried every combination then double check that your cable is working and contact me for help.Run `ls /dev/ttyUSB*`. It should show `ttyUSB0`Run `sudo bash`. This will switch to a root shell.Run `echo “wp false” > /dev/ttyUSB0`Run `echo “wp false atboot” > /dev/ttyUSB0`Run `echo “ccd reset factory” > /dev/ttyUSB0` Type `exit` to exit root shellRun `gsctool -a -I`. All flags should show “Y/Always”Run `sudo crossystem wpsw_cur`. It should output 0, which means firmware write protect is successfully disabled!What do you mean by “Debug Board”? I’m looking for a “Debug Cable”The original SuzyQ sold by Sparkfun was a cable. Many people make DIY debug cables by cutting and soldering normal USB cables to a breakout board. The debug board works similar to a breakout board which you solder on a USB cable, except instead of soldering, you simply need to plug in a normal USB-C cable into the debug board. Basically, This Debug Board + A normal USB-C cable (with data transfer) = Debug cable. A debug board is cheaper and stronger than a hand-soldered debug cable, and uses less materials because you can temporarily use your phone charger as a debug cable.What if I don’t have a USB-A port?You have 2 options:Use an adapter (available for sale as a variation of this item)Plug the USB-A to a different computer running Linux and run the necessary commands from that computerWhy is the price so high?The price is split up into different costs. Here is a chart of the costs:GSC Debug Board Cost DescriptionCostPCB Cost$2.36PCB Design Cost$2.97Future Purchase Fund$2.05PCB Packing Cost$0.38eBay Fees$1.50Donation$1.03Total$10.28GSC Debug Board + Cable DescriptionCostPCB Cost$2.36PCB Design Cost$2.97Future Purchase Fund$2.05PCB Packing Cost$0.38Cable Cost$0.43Cable Packing Cost$0.17eBay Fees$1.59Donation$1.10Total$11.05GSC Debug Board + Adapter DescriptionCostPCB Cost$2.36PCB Design Cost$2.97Future Purchase Fund$2.05PCB Packing Cost$0.38Adapter Cost$0.12Adapter Packing Cost$0.17eBay Fees$1.54Donation$1.06Total$10.65GSC Debug Board + Cable + Adapter DescriptionCostPCB Cost$2.36PCB Design Cost$2.97Future Purchase Fund$2.05PCB Packing Cost$0.38Adapter Cost$0.12Adapter Packing Cost$0.17Cable Cost$0.43Cable Packing Cost$0.17eBay Fees$1.63Donation$1.14Total$11.42 PCB Design Cost: Human time spent designing the PCBs and the design was reviewed by multiple peoplePCB Packing Cost: Human time packing PCBsPCB Cost: Cost of the PCB, PCBA, and shippingeBay Fees: Ebay takes a cut of the money earned by sellersFuture Purchase Fund: Will be used for the purchase of the next batch of PCBs, so I don’t have to pay for it with my own money. Currently this is set so that eventually there will be a future purchase fund of $650. Once it reaches that the future purchase fund will be $0 for future items.Donation: Instead of paying myself for the price of dropping the items off to USPS, I will donate a portion of the sale.Cable Cost: Cost to buy cables in bulkCable Packing Cost: Human time packing cables Adapter Cost: Cost to buy adapters in bulkAdapter Packing Cost: Human time packing adaptersWhy does part of the revenue earned go to you?These are the things I did / do which I am paying myself for:Research in how to make the debug cable, research in what materials to buyDesigning the PCBGetting the PCB double checked by other peopleContacting multiple PCB manufacturers, finding the best priceAdjusting PCB to meet the manufacturer’s requirementsSome of the money from selling these PCBs covers the cost of prototype PCBs for this itemTesting the debug boardPacking and shipping the debug cableWhy do you sell on eBay, even though it has fees?The item can be found on eBay and Google search results.eBay is a trusted website for buying stuffYou can see the reviews of the item and the seller’s reputation on eBayCustomers are protected by the eBay money back guaranteeeBay provides an easy to use buying, shipping, feedback, and refund platform What if the debug board is not working?Make sure that your chromebook supports CCDTry all of your chromebook’s USB-C portsTry to connect the debug cable upside downYou can message me through eBay and I will try to help you, but note that help with troubleshooting is not guaranteed with the purchase of this item.

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