There is no easy way to buy a ZXW Tools 1-year license without having to wait if you are located in the United States (or anywhere outside of China for that matter) because ZXW uses an online payment system called Alipay, which is only available if you have a bank account in China.  We make it easy to buy a 1-year license and activate your ZXW subscription.  In addition, we offer all ZXW Tools download versions on this page.  Click here to purchase an instant 1-year license.

ZXW Tools is the preferred software for iPhone and iPad logic board repair.

If you came here looking for a ZXW Tools download, then you’re in luck.  We’re hosting the software for those that can’t read Chinese.  If you’re having trouble installing ZXW, then here is a tutorial on how to do that.  As always, you can also download the original version directly from the ZXW website.

You can download the ZXW software from the links below:

• ZXW Tools v4.0 (59051 downloads ) [alt] (December 17, 2025)
• ZXW Tools v3.35 (211295 downloads ) [alt] (December 19, 2024)
• ZXW Tools v3.34 (Downloads: 4,938)
• ZXW Tools v3.33 (Downloads: 6,742)
• ZXW Tools v3.32 (Downloads: 2,095)
• ZXW Tools v3.3.0.9 (Downloads: 24,857)
• ZXW Tools v3.3.0.8 (Downloads: 1,086)
• ZXW Tools v3.3.0.7 (Downloads: 22,106)
• ZXW Tools v3.3.0.6 (Downloads: 10,241)
• ZXW Tools v3.22 + Microfish v3.2 (Downloads: 29,261)
• ZXW Tools v3.22 + Microfish v3.1 (Downloads: 3,302)
• ZXW Tools v3.1 + Microfish v3.0 (Downloads: 6,075)
• ZXW Tools v3.0 + Microfish v3.0 (Downloads: 16,431)
• ZXW Tools v2.6 + Blackfish v2.0 (Downloads: 56,563)
• ZXW Tools v2.5 + Blackfish v1.6 (Downloads: 9,953)
• ZXW Tools v2.4 + Blackfish v1.5 (Downloads: 38,474)
• ZXW Tools v2.3 + Blackfish v1.4 (Downloads: 9,521)
• ZXW Tools v2.1 + Blackfish v1.4 (Downloads: 5,165)

The schematics in the software are updated automatically when the program is run, so there is no need to download new software upon a new iPhone or iPad release. The software is automatically updated occasionally, but not often.

You can still purchase a dongle (version 2.6 and below) from our online store, which will give you a 1 year subscription or you can purchase a 1-year license for ZXW v3.0 from our online store.

If you want to renew ZXW, then you can also do that by buying a new zxw tools license.

Updated December 19, 2024: ZXW Tools v3.35 is out!

Updated May 28, 2024! Minor version update to 3.34

Updated September 23, 2023! Minor version update to 3.33

Updated January 10, 2023! Major version update to 3.32

Updated September  2, 2021! Minor version update to 3.3.0.9

Updated July 26, 2021! Minor version update to 3.3.0.8

Updated November 27, 2020! Minor version update to 3.3.0.7

Updated November 26, 2020 ZXW 3.3.0.6 has been released!

Updated October 27, 2020 ZXW 3.3 has been released!

Updated January 14, 2020 ZXW 3.22 + Microfish 3.2 has been released!

Updated January 6, 2020 ZXW 3.2 + Microfish 3.1 has been released!

Updated December 24, 2019 ZXW 3.2 has been released!

Updated September 17, 2019 ZXW 3.1 has been released!

Updated April 19, 2019 ZXW 3.0 has been released!

Updated July 12, 2018 ZXW 2.6 + Blackfish 2.0 is out!

Updated September 28, 2017! ZXW v2.5 + Blackfish v1.6 is out!

Updated January 24, 2017! ZXW v2.4 + Blackfish v1.5 is out!

The post ZXW Tools 4.0 Download – Buy License Instantly appeared first on Micro Soldering.

1. What temperature do I use for my hot air rework station?
2. How do I start troubleshooting a problem?

We’re going to try to address these things in our online courses.  In the meantime, we have two course available now, which cover the absolute basics of how the iPhone logic board works all the way up to the intricacies of doing a touch IC repair on an iPhone 6 plus.

The first course in our series is called iPhone Logic Board Repair: The Basics.

The online course lasts 1- hour and it’s broken down into 6 different sections:

1. Introduction
2. The Logic Board
3. The Tools
4. Defects
5. Troubleshooting
6. Repair

In the “Logic Board” section, you’ll learn about how the logic board operates and the building blocks of the logic board.  In the “Tools” section, you’ll learn about everything related to the tools and equipment required for microsoldering, like zxw tools dongle and schematics and physical tools.  In the “Defects” section, you’ll learn about the most common reasons for defects to the logic board.  In the “Troubleshooting” section, you’ll learn about some real life examples on how to diagnose a problem.  And finally, in the “Repair” section, we’ll give you examples of how the thought process behind a water damaged phone and touch screen problems.

All in all, this course is mainly for those just getting started and don’t really know where to start.  The hour long course will give you general ideas on what to expect.

In our second course of the the series, labeled iPhone Logic Board Repair: Advanced.  We cover the three most common iPhone microsoldering repairs: No Backlight, Touch IC Disease and Charging problems.

The course is broken down in the three sections.  Each section details how the circuit works, the common points of failure, and then we dive into step-by-step instructions on how to troubleshoot and repair the failure.  These are extensively tested and defined solutions to the most common iPhone problems.  We’ve literally fixed hundreds and hundreds of these devices with the methods described in the course.

These are just the first two courses in our series.  We’re aiming for a complete course teaching everything from how to get started to fixing the hardest microsoldering repairs, like BGA problems.

Update! We no longer sell the individual courses.  We only sell The Basics and The Full Curriculum courses.  See the below link for more information.

More info here

The post Learn Microsoldering Online appeared first on Micro Soldering.

A lot of times, the customer has no idea why their iPhone 12 has started boot looping. Sometimes, they wake up one day, after charging it all night and then the phone just won’t go past the apple logo. Sometimes, there’s a little bit of water exposure and maybe the phone works for a little bit, but then the dread iphone 12 boot loop!

Fortunately, we’ve repaired hundreds of these devices successfully! Including saving the customer’s data.

Here is the problem: until Apple decides to get rid of the ear speaker hole at the top of the screen, then this probably will n ever go away because any type of liquid (including hand sanitizer) will “leak” into the ear speaker flex and cause corrosion. More specifically, the flood illuminator on the ear speaker flex gets corroded, which in turn causes the dread iphone 12 boot loop.

The repair is fairly simple, so long as you have to right tools. First step is to disassemble the iphone 12. Second step is to take the ear speaker flex assembly off of the screen. You can read some tutorials on how to disassemble your iphone and take the ear speaker flex off. We won’t go through that here, since there are literally dozens of tutorials online already.

Now, the hard part is to clean the corrosion off of the flood illuminator, which is used for face id, and solder this component back onto a new ear speaker flex or reuse the same flex. You can watch a video of the repair process here:

The video above just happens to be of one where the ear speaker flex was accidentally ripped during a screen repair, but the repair is the same.

The post iPhone 12 Boot Loop Repair appeared first on Micro Soldering.

I hear the same stories over and over and it usually goes like this, “one day I was charging the phone and then all of the sudden the phone started boot looping.  Sometimes, it would boot to the home screen, but after a little while, it just kept boot looping.  I took it to the Apple store and they told me that it’s a logic board repair, which they don’t do.  They recommended that I upgrade to a new phone”.  At this point, the customer usually googles “logic board repair” or “micro soldering iphone” and we pop up in the searches and they contact us.

“Apple told us”…blah blah blah…”can you fix my phone?”. Normally the customer wants their data or they just refuse to pay for a new phone when their current phone is perfectly fine (minus the boot loop).  Good news is that we can usually fix this problem.

So, despite what Apple claims, these iPhones are absolutely NOT water proof and barely water resistant.  Until the ear speaker grill, the sim tray hole and the lightning charge port holes are gone from the phone, these iPhones will never be water proof.  The path of least resistance for iPhone water damage in these iPhones is the ear speaker grill.  Something as simple as wiping the screen down with some water or Purell can cause it to boot loop.  The water or hand sanitizer enters the phone through the ear speaker grill located at the top of the phone.  From there, it usually touches the metal pads connecting the flood illuminator or the proximity sensor eventually causing corrosion, which leads to the dreaded boot loop.

The fix is to replace the ear speaker flex.  Unfortunately, replacing the ear speaker flex disables the face id on the phone because the flood illuminator is tied to the logic board and required for face id to work.  Sometimes, you can find a micro soldering specialist to transfer the flood illuminator over to a new flex or clean the corrosion off of the current flex to fix the boot loop and the face id.

You can watch a video of our repair here:

If you want your iPhone 11 Pro boot loop or stuck in recovery mode repaired, then please request a quote here.  And here is our current price list for all repairs.

The post iPhone 11 Pro Max Stuck in Boot Loop Repair appeared first on Micro Soldering.

The problem seems to lie in the NFC flex.  This is the plate that is usually connected and screwed in last after a screen repair.  It looks like this:

If we drill down a little more closely near the connector on this plate, we can see that there is a little tiny resistor embedded in the plate.

I’m not exactly sure why Samsung decided to place this resistor on the NFC flex, but this little thing serves a big purpose, which is to tell the phone when it’s too hot to charge.  Without the NFC flex connected to the phone, the phone will display the temperature too low warning.

The actual problem doesn’t usually have anything to do with this NFC flex.  The actual problem is the connector on the logic board in which this NFC flex connects to.

This is what the connector looks like on the logic board.  It’s located slight below and to the left of the battery connector.  You’ll know exactly where it is because it’s where the NFC flex connector connects to.

In the blurry image above, if you look at the bottom row of pins, you can see the gold contacts showing through the black plastic connector.  In the top row, you can’t see the pins sticking out and if you look closely, you’ll see that the connector is actually bowed outwards.  The connector in this shape usually results in the Note 10 temperature too low warning.

This is usually due to repeated attempts at connecting this NFC flex using too much force.  I must admit that after trying to connect this flex myself, I found it very difficult to put back on without using my microscope.  I’ll just chalk it up to a poor design by Samsung.

the fix for this problem is to use some very fine tweezers to bend the pins and connector back into shape so that the pins are showing beyond the plastic again.

You’ll need some very pointy tweezers.  Probably better to have two of them, so that you don’t break the connector.  Using one tweezer, you want to push inwards from the outside and then using the other tweezers, you want to push the bottom outside of the connector, which should result in the middle row of the pins showing past the plastic again.  You can watch a video of the process here:

If you don’t feel comfortable repairing this yourself, then feel free to request a quote and we can fix it for you.

The post Samsung Galaxy Note 10 & Note 10 Plus Temperature Too Low Repair appeared first on Micro Soldering.

Until now, ZXW was the only software that contained vast amounts of iphone diode mode measurements for these devices.  It seems as though LogiWiki has more readings now.  It’s definitely not as easy to find the diode mode readings in LogiWiki as it is in ZXW, but just use the search function on the left sidebar and you should be able to find whatever you need.

At this point, I would say that this site is an essential part of iPhone, iPad, and Macbook logic board repair.  Check out the page if you haven’t already.

Without diode mode readings, the only way to repair logic boards is to buy another similar logic board and compare diode mode readings from the known good logic board.  This is a time consuming and often arduous task.  Usually, if it gets to this point, then I tend to just shy away from these jobs.

For instance, Samsung devices are notorious for lack of schematics, which make them way more time consuming to repair.  These days, I barely take on Samsung devices for repair because of added time and the low success rate.

The great thing about LogiWiki is that the site is built by repair technicians helping each other.  Diode mode measurements aren’t the end all, be all, but they definitely help expedite the repair process, especially for devices where schematics aren’t widely available.

Hopefully, together, we can expand on the amount of diode mode measurements for devices where schematics aren’t available, so that we can repair more devices and keep them out of the landfills.

The post iPhone Diode Mode Measurements – LogiWiki appeared first on Micro Soldering.

Anyways, good news is that we can repair iPhone 11 backlight issues.  What makes it a little more challenging is that the iPhone 11 is the first phone with a sandwiched logic board that uses an LCD screen.

The best way to identify an iPhone 11 no backlight problem is to shine a bright light in the middle of the screen, then look for some sort of image.  You should be able to see an icon or the apple logo or maybe a battery charging symbol, similar to this:

In the picture above, when a bright light is shined on the screen, you can see a faint apple logo, which tells us that the lcd is working, but the backlight is not.

In order to fix the backlight on an iPhone 11, we need to take the logic board out of the frame, partially remove the shield that covers the backlight components on the logic board, then take off and replace the two backlight resistors (aka backlight filters) that are blown.

The pictures above show the location of the backlight resistors.  There are two of them.  Both resistors will need to be replaced.  Since we don’t know the exact values of the resistors, we can just use the iphone 8 backlight resistors as they should be comparable.

The only thing to note about this repair is to be careful removing the shield that covers these backlight resistors.  Since the logic board is sandwiched, any heat applied to the logic board will most likely separate the two logic boards, then you’ll have other problems on your hand.  The best way to get access to these backlight resistors is to use some sharp micro cutters and snip away the shield without using heat.  You can watch a video of our iPhone 11 backlight repair on youtube.

The post iPhone 11 No Backlight After DIY Screen Repair appeared first on Micro Soldering.

Step 1

Download the latest version of the software: https://www.microsoldering.com/zxw-tools-dongle-download/

Step 2

Extract the contents of the file to a directory on your desktop.

Step 3

Run the executable to start the software.

(If you run into any issues with the executable, then you’ll need to disable any anti-virus software that you have running.  Unfortunately, there is no way around this.)

Step 4

You’ll need a license to access the schematics, so you can buy a 1-year license through our online store here.

Step 5

After you purchase the license, we’ll send you a Serial number and Password via email.  You’ll need these two things to create an account and activate your license.  You’ll need to create an account at the ZXW website here: https://t.zxwsoft.com/user/FastReg.aspx?l=en-US

Step 6

After you create an account at the ZXW website, then you’ll need to click on Authorization Code Renewal link on the left and then enter your Serial number and password that you just received.

From there, if you click on The Personal Data link, then you should see that your 1-year license has been activated and the page will also show you the expiration date.  That’s it!

The post How to Setup and Install ZXW Tools v3.x appeared first on Micro Soldering.

After opening the phone up, we didn’t notice anything unusual with the logic board.  Upon further testing, we didn’t notice any shorted power lines like vdd_main or pp1v8 or pp3v0.  Since we didn’t see anything unusual, we decided to separate the two logic boards.  Yes, the iPhone 11 has a sandwiched logic board with an interposer board just like the iPhone X, iPhone XS, iPhone XS Max, iPhone 11 Pro, and iPhone 11 Pro Max.  The sandwiched logic boards are always a little dicey to work with, especially if there were torn pads on the logic board.

Upon separating the two logic boards, we noticed that there were two chips that were cracked.  Since there are no detailed schematics available for these iPhones yet, we were uncertain about the exact function of these two chips, but we were able to make some good guesses based on past logic board repair with older iPhones.

We determined that one of the chips was the big audio chip and the other was a some sort of power chip.  After replacing both of these chips from a donor board, we were tasked with the challenging task of resoldering the two separated logic boards back together.

After four attempts, we were able to get everything working once again.

Some of the challenges that we faced were the fact that the backlight dimmed out with the ear speaker flex disconnected.  This was probably the biggest grief for us because we also missed a cracked backlight coil, which both contributed to the backlight not working.  After replacing the broken backlight coil, we thought that we had fixed the problem, especially after getting 20v at both anode pins, but we were trolled by the ear speaker flex being disconnected.

The second challenge was sandwiching the two logic boards back together.  We had to do it a total of 4 times, mainly because we didn’t tin the pads well enough and we didn’t apply enough pressure to the two logic boards after heating them up.  It was mainly at the two ends of the logic boards that we were having the most problems because they tend to warp a little and bend upwards and away from the interposer board.

Anyways, I’m happy to say that after four attempts, we were able to get everything working on the iPhone 11 logic board, so I think that we can comfortably say that we’re qualified to work on these logic boards now.

If you’re interested in sending in your iPhone 11 logic board for repair, then please request a quote here.

The post iPhone 11 No Power Logic Board Repair appeared first on Micro Soldering.

If your license is expired, then you’ll need to purchase a new license.  You can do so from our store.

After purchasing the license, you’ll receive a serial number and password, which you’ll need to enter into your online portal.

Click on “Authorization Code Renewal” on the left hand side menu, then enter the serial number and password into the appropriate boxes.  Enter the verification code, then click on “Immediate use”.  Once successful, then you can go back to “The Personal Data” page and check your “expiry date”.  That’s it!

The post How to Renew ZXW Tools v3.x appeared first on Micro Soldering.