RQR24.06_B0030.hex checksum location

[Ashark]

Hi,
I am trying to repeat the steps but with RQR24 variant file.
In README you say that for RQR12.08_B0030.hex you need to edit two bytes at location 0x67FE, and there is explicit line for that in RQR12.08_B0030.hex file: :0267FE0010A1E8
But what about RQR24.06_B0030.hex? How to find out which location contains a CRC?

I replaced PID and line checksum, generated bin file, then got a CRC checksum:

$ python2 crc.py RQR24.06_B0030.bin 
cur: ffff
new: 661f

67FE location in that file contains FF values. I tried to edit file in these ways: :1067F000FFFFFFFFFFFFFFFFFFFFFFFFFFFF1F6622 and :1067F000FFFFFFFFFFFFFFFFFFFFFFFFFFFF661F22 (because I was not sure about bytes order)
but in both cases I finished with

Installing on Unifying Receiver…                                 ]
Writing…                 [************************************** ]CRC is incorrect

And receiver became 046d:aaac.

[xurubin]

RQR24 is a complete different piece of hardware (C-U0008, TI-based) so unfortunately nothing I wrote would probably apply. Looking at RQR24.03_B0027.hex, it has the bootloader code at the very beginning followed by real firmware, unlike C-U0007 where the bootloader code is at the very end. Just by looking at the bytes, the last 6 bytes at 0x6BF0 could be relevant. However given it's a different design, the CRC algorithm can also be different. You can probably disassemble the bootloader code to figure everything out, but that's non-trivial (for one thing, I don't even know the exact SoC used and what instruction set it uses)

[Ashark]

Unfortunately, I do not know disassembling =( I could only replace bytes if I know which values and where. I have no much knowledge in this thing. Does Bastille Security covered this new chip? Or they only modified firmware for the old one? I mean is it worth to take closer look at their repo?
Btw, you say that bootloader is a part of firmware? I did upgrades before (not modified) for my receivers, and bootloader versions were never updated. Is that normal?