Recent content by gzb90

Hi guys a year later! Meanwhile I managed to get a full nand dump from another router and reprogram my memory using external programmer. I didn't change the mac address on cfe because of ECC checksums in spare area. Now i got an error: "MDIO Error: MDIO got failure status on phy 7" Using...

I cannot find way to flash nand memory using jtag. On OpenOCD there are examples but for routers with NOR memory, nothing about nand. If anyone needs jtag access: J4: TDI 1 TDO 3 TMS 5 TCK 7 nTRST 9 GND 6,8,10 So i think I need reprogram nand using external programmer. I...

I found jtag on the J4 header. I'll post details later. What I need to do next? I seen using OpenOCD is useful in some cases but my board is unsupported. Any thoughts?

I just realized nothing is visible on this processed photos, originals are here: https://drive.google.com/drive/folders/11QFQ6zuWti0Axo2eS7vRNQY7pi7UhbJz?usp=sharing I will check tommorow, resolder this nand and use logic analyzer to find out some communication on this pins.

So i did some tests, first I desoldered nand from motherboard and bootlog look like this: ---- BTRM V1.3 MEM? MEMP CACH CODE ZBSS MAIN OTP? OTPP USBT NAND IMG? FAIL ---- ---- BTRM V1.3 MEM? MEMP CACH CODE ZBSS MAIN OTP? OTPP USBT NAND IMG? FAIL ---- And bootlooping with the same instructions...

Unfortunately device does not go in recovery mode, LAN ports are dead - Windows tell me "Ethernet cable is unplugged" Chipoff or jtag are my only chance? From bootlog i understand is something wrong with "UBI?", what's that?

Hi guys, I found yours forum looking for solution for my bricked router. After power-on nothing happen - no leds, no wifi etc. It draws 0.09A, and are stuck. The bootlog from uart doesn't look optimistic: BTRM V1.3 MEM? MEMP CACH CODE ZBSS MAIN OTP? OTPP USBT NAND IMG? IMGL UHD? UHDP RLO...