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chechito
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RB750Gr3 Repair Guide

Sun Jul 17, 2022 2:21 am

I have an RB750Gr3 which boot-loop, i try netinstall,

netinstall procedure run normally and upload software OK but it continues rebooting

Somebody can share with me the repair guide document for this reference to check if there is a hardware failure?
 
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Re: RB750Gr3 Repair Guide  [SOLVED]

Mon Jul 18, 2022 1:46 am

Netinstall with 6.48.6, but after successfully netinstall,
shutdown the device,
power the device while pressing reset, but just when someting light, release instantly reset,
if boot, first thing you must do is update routerboot inside winbox.
 
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Re: RB750Gr3 Repair Guide

Mon Jul 18, 2022 2:49 am

i will try your instructions

Thank You
 
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Re: RB750Gr3 Repair Guide

Mon Jul 18, 2022 10:12 pm

Netinstall with 6.48.6, but after successfully netinstall,
shutdown the device,
power the device while pressing reset, but just when someting light, release instantly reset,
if boot, first thing you must do is update routerboot inside winbox.

Thanks a LOT that was the way to recover this device !!!
 
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Re: RB750Gr3 Repair Guide

Tue Jul 19, 2022 12:02 pm

Surprised??? :roll:
After all this years trying to guessing on forum :lol:

(it's obvious you couldn't provide more details from a device that won't boot... ;) )
 
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Re: RB750Gr3 Repair Guide

Tue Jul 19, 2022 12:06 pm

What probably is happened: writing error on nand offset, replace some bits inside routerboot code.
That procedure boot the device with factory routerboot.
When booted, simply reflash current routerboot fix the error(s).

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