Recently, several articles have been released on the problem plaguing the iPhone 7 and iPhone 7+ called Loop Disease.
Essentially, the mic and speaker functions will stop working for no apparent reason. The red button under voice memos will be grayed out. Also, the caller can’t hear the person on the other end and vice versa. You might get something like this:
Loop disease is becoming an ever increasing problem, especially since these iPhone 7/7+ phones are coming off of their 1-year warranty. Once again, instead of addressing the issue, Apple has decided that the best course of action is to just ignore the issue and hope that customers pay $600 – $1,000 to upgrade to a newer version of one of their phones
Here at Microsoldering.com, we’ve known about this problem for a while now. The problem is that due to the bending of the logic board or a hard drop, a pad under the chip that handles the audio on the iPhone becomes disconnected from the logic board.
Every pad under a chip is designated by a letter proceeded by a number. This missing pad under the audio IC is known as c12. To fix this problem, we must disassemble the iPhone down to the logic board, then remove this chip, run a microjumper, and reball and replace the chip. You can watch a video of the repair here:
Do you have this problem on your iPhone? Would you like to have it repaired by a professional? Fill out the quote form to get start.
Symptoms: After a screen or battery repair, the phone boot loops a few times during boot up, then never charges. The battery percentage stays at 1% or charges very, very slowly.
The Damage: There are some small components near the display/lcd connector that gets dislodged when the connector is disconnected from the logic board. More specifically, a zener diode (DZ3200) and a transistor (Q3200).
The Fix: Usually, some pads are also missing, so we’ll need to run some micro-jumpers to the missing pads and replace the missing components.
Watch our video on how to repair this problem using microsoldering.
ZXW Tools is the preferred software for iphone and ipad logic board repair. The dongle acts as a security key for the downloadable software. The software can be downloaded freely on their website, assuming you can read chinese :
Important update on 3/11/2017: The version 2.4 download file from the zxwtools.com website contains a keylogger trojan contained within a separate directory in the .rar file. See below:
Please make sure that you delete this directory once installed or you can just use the version 2.3. Better yet, download the file from our link below. We’ve removed the directory with the trojan from our compressed file. Thank you to Terry for pointing this out to us!
If you came here looking to download the software, then you’re in luck. We’re hosting the software for those that can’t read chinese or don’t know how to get a browser with translation.
You can download the ZXW Tools dongle software from the below link:
- ZXW Tools v2.5 + Blackfish v1.6 (latest version)
- ZXW Tools v2.4 + Blackfish v1.5
- ZXW Tools v2.3 + Blackfish v1.4 Download
- ZXW Tools v2.1 + Blackfish v1.4 Download
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. New versions of the ZXW tools software are updated occassionally, but not often.
If you’d like to purchase ZXW Tools dongle, you may do so from our our online store.
Version 2.3 above is the latest version of the software as of July 22, 2016.
Updated January 24, 2017!
ZXW v2.4 + Blackfish v1.5 is out!
Updated September 28, 2017!
ZXW v2.5 + Blackfish v1.6 is out!
For those of you who own the Naviplus Pro3000 Nand programmer, here’s the latest update for the firmware v1.1302:
It’s easy to install. Just download and unrar the compress file. Move the NK.bin file to an SD or microSD card, then plug the card into the back of your Naviplus Pro3000. Turn on the programmer and click on “Soft Update” or “System Update” once you get to the main screen.
Looking for the User’s Manual? Here it is:Download