FS728TP attention firmware update!

Too bad, you can ruin a good switch poe by a stupid firmware update. Tried to update my FS728TPv1 to the latest 5.0.0.8 3.0.0.22. Downloaded the zip file, you start the procedure to update with discovery of the smart wizard, message received "updated successfully"... but after reboot the switch is bricked. Did some reading, found I'm not the first guy with this case, should be updated first, startup code from 1.0.0.2 to 1.0.0.5. But it was not a code starting update file in the zip! I found somewhere on the netgear firmware french site the oldest 5.0.0.6, which contains ng_fs728tp - V5006.ros and ng_fs728tp_boot - 1005.rfb. I feel so stupid, I'm?... to open the switch box, found 88E6218-LG01 Marvel, used on some routers 10 years ago chip. anyone find a procedure to revive the switch, a tftp, a series or something connection session. I know netgear offer guaranteed for life and replace the switch, but not my case... just feel sorry a switch of the brick work

There is a solution, in case you brick the switch to update the firmware, do not update the boot code appropriate. The boot code is some program low level similar to the bios on the card. Did some deep research on Marvel 88E6218-LG01 Chipset, I found somehow that pin 52 and 53 are Rx and Tx respectively to integrated serial UART. The two signals are 12 (Rx) and IC U27 PIN 11 (Tx). The IC and passive components around him are not soldered because the switch is not a serial console. Near U27 is the serial J8, not used. The U27 is a similar to max232 chip. The idea is to make a connection with the switch using p52 series = Rx, p53 = Tx and, of course, GND, I soldered the wires to p11 and 12 of the U27. Then do a session in Hyperterminal using baudrate = 38400, data bits = 8, parity = none, stop bits = 1, flow control = none. Power on the switch, you will see power on self-tests, boot network device based on 88E6218 software version with ARM946E-S then: autoboot in 2 seconds, press return or ESC to interrupt and enter the dance. In those 2 seconds interval if you press the INPUT switch goes to the start with 6 options menu: 1 = software download 2 = flash file Erase 3 = 4 = diagnostic mode password recovery procedure entry 5 = Set baudrate terminal 6 = back. Choose option 1) then the switch is waiting for the firmware file "code using XMODEM download, $$$ writing and waiting...". Now go to hyperterminal transfer, send file > Browse for firmware 3.0.0.22 .ros (before update wrong firmware), choose the XMODEM Protocol, and then click Send. File transfer begins, will take about 25 minutes. After that the switch restarts correctly, and discovery of the smart wizard he found. Update the firmware on 5.0.0.6 family must 1.0.0.5 to update the BOOT CODE. The boot - 1005.rfb can be found on this website: http://www.netgear-forum.com/forum/index.php?s=7d23113dd1660e3c9d613aa739513390&showforum=704 , in 5.0.0.6 zip of the firmware. Have fun...

Tags: Netgear

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