Maybe they have different HW-revision "in the field" and some need special firmware or special update procedures?!
This is interesting, and could be possible, since i just got my 00.04.00 from Rigol official tech support and it not include the bootloader upgrade.
I did the upgrade and so far my enhanced features are still there.
This is the change log i received from Rigol:
Following is the issue fixed in new version 00.04.00.
| Switch the video standard, synchronized automatically | M
| changes all the lines, the trigger status error. |
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| When you open LA's D8-D15 channel, CH4 pattern can not be configured. | M
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| The waveform is wrong when the trigger type have two or more | M
| trigger signal source. |
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| You can also continue to increase the limit REF channel | M
| offset when prompt appears. |
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| When the LA probe Calibration finish, it should have prompt | M
| an operation of next step. |
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| The LA pop-ups error message prompt when first opening the | M
| LA after oscilloscope start. |
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| The LA time delay didn't work well when restoring factory | M
| setting. |
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| After the read channel arbitrary waveform switching to a | M
| sinusoidal waveform, the amplitude of the first modification |
| is invalid. |
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| Sawtooth regulate slow response. | M
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| Add the remote command of read waveform data of the Logic | E
| channel. |
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| Add the remote command of measure of "MATH" function. | E
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| Fixed unrecongnizable code bug in text box of update | M
| function while the system language is traditioal Chinese. |
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| In scan mode and ZOOM on, switch trigger mode cause system | M
| crash. |
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| There is no help info of Horizontal offset key. | M