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2Q0 radar firmware downgrade
23-10-2022, 11:41 AM,
Post: #1
2Q0 radar firmware downgrade
Hi All,

I would like to ask if there is possible to downgrade 2Q0 radar from version 396 to previous 383? I heard somewhere that downgrade is not possible and I do not want to corrupt firmware.

Thanks,

David
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23-10-2022, 14:44 PM,
Post: #2
RE: 2Q0 radar firmware downgrade
(23-10-2022, 11:41 AM)david99 Wrote:  Hi All,

I would like to ask if there is possible to downgrade 2Q0 radar from version 396 to previous 383? I heard somewhere that downgrade is not possible and I do not want to corrupt firmware.

Thanks,

David

Hi
 if it helps you with Test Plattform Bench(NOT in car)  with a 2Q0 907 572M H03 radar I did a lot of flash tests with VCP ...

From 0396 to X383 I first flashed with 2Q0907572T-BOOTLOADER_V001_S.odx then flashed with FL_2Q0907572T_X383___S.odx with successfully [Image: yes.gif]


[Image: 00khCUG.jpg]

then......


[Image: PA8x0gf.jpg]
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[+] 1 user says Thank You to ciamardo for this post
23-10-2022, 15:02 PM,
Post: #3
RE: 2Q0 radar firmware downgrade
Thank you for reply, do you think that bootloader and X firmware is needed firstly before flashing normal 383?
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23-10-2022, 15:38 PM,
Post: #4
RE: 2Q0 radar firmware downgrade
(23-10-2022, 15:02 PM)david99 Wrote:  Thank you for reply, do you think that bootloader and X firmware is needed firstly before flashing normal 383?
for downgrade the flashed Bootloader is required , then I honestly do not know if it is possible to flash 0383 directly without any error [Image: thinking.gif]
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24-10-2022, 07:04 AM,
Post: #5
RE: 2Q0 radar firmware downgrade
(23-10-2022, 15:38 PM)ciamardo Wrote:  
(23-10-2022, 15:02 PM)david99 Wrote:  Thank you for reply, do you think that bootloader and X firmware is needed firstly before flashing normal 383?
for downgrade the flashed Bootloader is required , then I honestly do not know if it is possible to flash 0383 directly without any error [Image: thinking.gif]

But bootloader should be the same shouldn't be? I was firstly on X383 (done that with bootloader), then on normal 383 and then after few months directly to 396 but I was not doing anything with bootloader.
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24-10-2022, 09:50 AM,
Post: #6
RE: 2Q0 radar firmware downgrade
Only H03/H04 can be downflashed safely. H10 and above will (soft)-brick during downgrade. But after flash 0396 again they will work again without any problems
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[+] 1 user says Thank You to nirvananils for this post
24-10-2022, 11:00 AM,
Post: #7
RE: 2Q0 radar firmware downgrade
(24-10-2022, 09:50 AM)nirvananils Wrote:  Only H03/H04 can be downflashed safely. H10 and above will (soft)-brick during downgrade. But after flash 0396 again they will work again without any problems

Thank you for explanation and could I downgrade directly by flashing only 383 firmware directly? without bootloader or anything else?
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24-10-2022, 15:52 PM,
Post: #8
RE: 2Q0 radar firmware downgrade
Why you need downgrade?
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24-10-2022, 17:13 PM,
Post: #9
RE: 2Q0 radar firmware downgrade
(24-10-2022, 15:52 PM)Versus Wrote:  Why you need downgrade?

pACC function which is adjusting speed based on road (no signs) but on road like turns...etc. Now with 396 it is decreasing speed much more than before with 383 and it is kind of irritating me.
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02-11-2022, 21:29 PM,
Post: #10
RE: 2Q0 radar firmware downgrade
(24-10-2022, 17:13 PM)david99 Wrote:  
(24-10-2022, 15:52 PM)Versus Wrote:  Why you need downgrade?

pACC function which is adjusting speed based on road (no signs) but on road like turns...etc. Now with 396 it is decreasing speed much more than before with 383 and it is kind of irritating me.

My radar updated from 383 to 396, pACC speed regulation work same as 383.
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