Work completed
- Removed flashing headers:
- J4: all six nets severed and component removed from schematic & PCB
- J5: both nets severed and component removed from schematic & PCB
- Purged unused parts and orphan artifacts (duplicate USIM1 portals, leftover ESP32/SW1 passives/connectors)
- Renumbered all component designators sequentially to eliminate gaps
- Renamed net U5_IN to SYS_VBAT
- Updated BOM and project properties to document these changes
Remaining action
- ERC/DRC review and error resolution (unable to run automatically) to confirm no critical net breaks
Success criteria review
- ✅ J4 & J5 removed without affecting power, USB-C, audio, modem or SIM nets
- ✅ Unused parts purged and designator gaps eliminated
- ⚠️ ERC/DRC validation pending
Next step
Perform schematic and PCB rule checks (ERC/DRC) to ensure full electrical integrity before proceeding to layout review.