In the field of PCB design, electronics development, and chip decryption services, technical communication and reliable supplier support are crucial. As a technician working in a network design service company, I frequently deal with chip decryption projects and collaborate with various suppliers. Among them, DALIAN JY ELECTRONIC TECHNOLOGY CO., LTD. has stood out for its excellent service and strong professionalism.
This article shares a real project experience—optimized and rewritten for search engines—to help engineers understand common challenges in chip decryption, PCB programming workflows, JTAG wiring, and troubleshooting methods.
Excellent Service and Reliable Technical Support
From the very beginning, the service attitude of JY Company was impressive. Their team patiently answered every technical question and helped us solve multiple unexpected issues. Although our management once considered switching to another supplier due to a slightly lower price, my continuous positive experience with JY’s engineers convinced my leadership to continue working with them.
Throughout the chip decryption and PCB program-burning process, the engineers never lost patience—even after I urged the delivery progress many times. Their professionalism made the entire project much smoother.
Issue 1: How to Open and Run the Decryption Program
When Amy sent me the decrypted program, the first problem was how to run it. I did not know which programmer software was compatible. My device is the SuperPro 5000U, while Amy confirmed that the program runs smoothly on SuperPro 6100 or ALTERA devices.
Initially, the program did not open on the 5000U model. After reviewing the official manual and following the steps carefully, I was finally able to open and load the program correctly.
This highlights an important point for PCB engineers: different programmer models may vary in format compatibility, and checking the supported device list is essential before burning chip firmware.
Issue 2: JTAG Wiring Difficulties
The SuperPro 5000U JTAG interface includes 7 wires labeled 1–7. Without a wiring guide, I had no idea how to connect them to the IC.
Amy provided a chip pinout diagram and reminded me that I only needed to locate and connect four key JTAG signals:
- TDI
- TDO
- TCK
- TMS
Initial Attempt Using a Multimeter
Amy suggested using the continuity mode on the multimeter:
- Set the multimeter to buzzer mode.
- Touch one multimeter probe to each IC pin (the chip had 144 pins).
- Touch the other probe to each of the 7 JTAG wires.
- When the multimeter beeps, the corresponding wire-pin connection is identified.
However, this process was extremely time-consuming due to the large number of pins.
Alternate Wiring Schemes Provided
Amy then offered two possible wiring configurations:
- Configuration A:
- TCK → 5
- TDI → 7
- TMS → G
- TDO → 6
- Configuration B:
- TCK → 5
- TDI → 7
- TMS → 6
- TDO → G
Even so, the wiring still failed to work. I then shared with Amy the Chinese-language programmer instructions. After comparing the instructions with the chip data sheet, Amy identified the root cause: I had made an error in the wiring connection.
Once corrected, the decryption program ran successfully.
Issue 3: Program Copied but Chip Not Working
Although the system indicated that the program had been successfully copied to the new chip, the board did not work.
Possible Causes
Many factors can cause a PCB or chip to malfunction:
- The original chip might have already been damaged.
- PCB soldering quality may be poor.
- Other electronic components on the board may be faulty.
- The burning process may not have actually written all data correctly.
Functional Criteria
A working chip in this application should:
- Light up when connected.
- Light only once when disconnected.
Failure symptoms included:
- The indicator light turning on automatically without any external input.
- After unplugging and reconnecting the wire, the second LED flashing unexpectedly.
These symptoms demonstrate that chip programming issues, IC compatibility, or board-level hardware problems could all contribute.
Conclusion: Professional Support Makes a Difference
Regardless of the final result, this collaboration helped me resolve numerous technical issues across the PCB programming and chip decryption workflow. JY Company’s team showed professionalism, patience, and deep understanding of complex board-level debugging.
If your company is looking for chip decryption, PCB design, PCBA development, or firmware programming services, feel free to contact us. We provide expert technical support and reliable solutions for your electronic projects.
Contact us today to get a quote or send your inquiry!
