Bricked Cisco RVS4000 (router)

Discussion in 'BIOS Mods' started by pincushionman, Oct 1, 2014.

  1. pincushionman

    pincushionman MDL Novice

    Oct 12, 2010
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    13
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    Hey all, I have bricked an RVS4000 router. I need help identifying the BIOS chip. These are uncommon wired routers by Cisco/Linksys that provide reasonable throughput IPSec VPNs. They get bricked when you flash from v1.0 to v1.3 without going to v1.1 and performing a factory reset.

    RVS4000_01s.jpg
    Here's some detail about the unit:
    NUMONYX StrataFlash 64 Mbit 85 ns 56 TSOP
    stylized lowercase letter i, U2:
    JS28F680P
    30B85
    A6287143
    M-circle, C-circle, '03, theta-3-circle

    *** That's it, isn't it?

    U5 and U6 empty (probably for the WRVS4400N variant)

    Start9202 Processor, U11:
    HJJQ6.1a
    0625EK
    AC00Bg

    RAM? 2 of these U12 & U13:
    NANYA 0650
    NT5DS16M16CS-5T
    638020R0AN TW

    Well, unsoldering is out. Anyone know if these things have a JTAG port somewhere? Like here? I see a lot of TP designations
    RVS4000_02s.jpg