OnePlus Nord CE4 Lite CPH2621 ISP Pinout [Tested]
A OnePlus Nord CE4 Lite stuck on the boot logo or missing from the PC needs board-level access. This guide covers the CPH2621 ISP points and the exact checks to complete before connecting UFI Box, Easy JTAG Plus, or Flash64. ISP lets you reach the UFS storage directly when normal Qualcomm flashing will not respond.
The Nord CE4 Lite runs on Snapdragon 695 and stores data on fast UFS memory. Confirm CPH2621 on the label before starting because other Nord models use different layouts. We have used this pinout in the shop and it brings up the storage chip reliably on the first attempt when the wiring is correct.
When This Pinout Helps
- Phone hangs at the OnePlus logo after a failed flash
- Device not detected by the computer
- Storage identification and full backup work
- Boot or partition repair
- Firmware read and write through a supported box
OnePlus Nord CE4 Lite ISP Pinout Image
The board image below shows the marked ISP points near the memory chip. Use the photo on screen and compare it with the motherboard in front of you. A wrong model diagram or a bridged line can block detection or damage the board.
ISP Lines and Their Role
| Line | Role |
| Rst | Storage reset signal |
| TXOP / TXON | Transmit differential pair |
| RXOP / RXON | Receive differential pair |
| GND | Common ground on the board |
Tools Needed on the Bench
- UFI Box, Easy JTAG Plus, Flash64, or another UFS-capable box
- Fine jumper wire and a sharp tip
- Microscope or strong magnifier
- No-clean flux and 99% IPA
- Multimeter for continuity and shorts
- Original USB cable and the right UFS adapter
OnePlus Nord CE4 Lite Specifications
| Device | OnePlus Nord CE4 Lite |
| Model | CPH2621 |
| Chipset | Qualcomm Snapdragon 695 |
| Storage | UFS — up to 256GB |
| RAM | 8GB |
| Display | 6.67-inch AMOLED, 120Hz |
| Announced | Mid 2025 |
How to Connect the ISP Points
- Confirm CPH2621 on the label or board.
- Disconnect the battery before cleaning or soldering.
- Open the shield and clean the memory area with IPA.
- Match the diagram with the physical points.
- Connect GND to a clean ground point first.
- Solder the Rst, TXOP, TXON, RXOP, and RXON lines.
- Check each jumper with a multimeter for continuity and shorts.
- Attach the adapter and select the storage profile in the box.
- Run Identify first, then make a full backup.
Common Problems and Fixes
- No chip detected: re-check GND and adapter direction, then inspect solder joints.
- Unstable connection: shorten the jumpers and look for bridges on TX/RX lines.
- Read error: clean the points again and pick the correct storage profile.
- Board heating: disconnect power at once and check for a short.
- Wrong storage size: stop and confirm the model and board revision.
Safety Notes
Do not apply power before checking the wiring. A bridged data line or wrong voltage can kill the UFS chip or the motherboard. Start with identification, keep the backup safe, and only continue with a write or repair after the connection stays stable.
Frequently Asked Questions
The OnePlus Nord CE4 Lite uses model code CPH2621. Confirm it before using the pinout.
The Nord CE4 Lite uses the Qualcomm Snapdragon 695 platform with UFS storage.
No. Board layouts differ across Nord models. Use the verified CPH2621 diagram only.
A UFS-capable UFI Box, Easy JTAG Plus, Flash64, or another supported box can be used with the correct adapter and voltage settings.
Final Thoughts
ISP is a reliable fallback when the Nord CE4 Lite stays dead or undetected. Confirm the CPH2621 board, study the marked image, and start with storage identification. A clean backup before any write keeps the job safe.
