I had success upgrading my mso1074z-s
Software version 00.04.04
Board version 6.1.1
I compiled loaderr's version of rigup with VS 2013
Used a Chinese knockoff jtag dongle firmware: J-Link ARM V8 compiled 1 Dec 2009. Hardware version: V8.00
Turned on the oscilloscope then plugged j-link into the computer
Started J-link commander from the command line>JLink.exe -speed 100
J-Link>connect
......
Device>arm9
.......
JTAGConf> (just press enter)
J-Link>h (press enter when license screen appears)
J-Link>speed 4600
J-Link>savebin mso1074z.bin 0x40000000 0x3FFFFFF
J-Link>g
Use Loaderr's file as per usual.
I bought my scope from Rigol 3 months ago with the latest firmware installed, the jtag header was still present.
Thank you to everyone who contributed
I am now able to continue electronics thank god! Ha