Thread: Convert 3790/3760/3750 to 3490

After installing unoriginal firmware good way to clear NV is
ergn,41
But you lose your model number (not big problem)
And NEVER erase regions 05 and 43 - it kill your device.

Originally Posted by Alexander2010

After installing unoriginal firmware good way to clear NV is
ergn,41
But you lose your model number (not big problem)
And NEVER erase regions 05 and 43 - it kill your device.

Do you mean we all can restore model number back easily after ergn,41 ?
Which way will you advice ?
How about Unit ID after ergn,41 ?
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I never deleted rgn 41 after flashed (for many times) with other firmware., just did clear NV by menu.

Originally Posted by aekhong

Do you mean we all can restore model number back easily after ergn,41 ?
Which way will you advice ?
How about Unit ID after ergn,41 ?
---------------------------------------------------------------
I never deleted rgn 41 after flashed (for many times) with other firmware., just did clear NV by menu.

After ergn,41 UnitID will remain the same. But if you lose model number, you will not be able restore it back. At least it's not easy.

Originally Posted by voyager56

After ergn,41 UnitID will remain the same. But if you lose model number, you will not be able restore it back. At least it's not easy.

I agree. (At least for you and me ., to restore model number is pain.)
I will lost many features if 3750/3760/3790 --> 37xx.
To lost Unit ID is not my big problem.

Originally Posted by aekhong

I agree. (At least for you and me ., to restore model number is pain.)
I will lost many features if 3750/3760/3790 --> 37xx.
To lost Unit ID is not my big problem.

From my experience model number 34xx didn't mean less functionality. I think functionality is the same as for 3490.
I had an issue with lost Bluetooth, but now it's solved.

Originally Posted by Alexander2010

After installing unoriginal firmware good way to clear NV is
ergn,41
But you lose your model number (not big problem)
And NEVER erase regions 05 and 43 - it kill your device.

if erase then write before reboot will kill?
I tried to overwrite without erase before but it didn't do the job.

Originally Posted by bpb

I tried to overwrite without erase before but it didn't do the job.

Check syntax.
From Kanopus post on another thread:

Originally Posted by Kanopus

..... run rrgn,140,1:/dump140.bin, edit dump and run xrgn,140,1:/dump140.bin

No suggestion there of any need to erase ANYTHING before writing. If it didn't update you may have file path/name syntax error?