Some users have reported issues with the firmware, such as:
The typically features a different Wi-Fi chipset and flash layout compared to older revisions. Using firmware intended for the H/W Ver A1 or B1 on a J1 unit will result in: d-link dsl-2750u h w ver j1 firmware
Once the router reboots, the lights will stabilize. Some users have reported issues with the firmware,
: Long-time users and forum moderators often advise that the only reliable way to secure the specific J1 firmware is to contact regional D-Link support d-link dsl-2750u h w ver j1 firmware
: J1 (Verify this on the sticker at the bottom of the device)