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Thanks Paul,

Wondering about comments in startup.c

// TODO: zero uninitialized EXTMEM variables
// TODO: copy from flash to initialize EXTMEM variables
// TODO: set up for...

I have continued to play with the update and so far I think this takes care of it...

Note: Maybe for next (after this fix) wish we had something like this in the imxrt1062_t41.ld file:
...

Good morning Paul,

I tried blink with T4.1 and as well my camera sketch run from sublimetext build and both compiled and programmed two differnt T4.1s

Yep - it was a quick and dirty (originally from Frank :D ), that I have played with and find useful. I probably should cleaned up some. Especially how it depends on exact strings...
Also maybe...

I did some hacking and my T4.1 programs now... More or less reverted some of it...

my imxrt1062_t41.ld right now looks like:

MEMORY
{
ITCM (rwx): ORIGIN = 0x00000000, LENGTH = 512K
DTCM...

I am trying to look at the differences in the code between the two releases and wondering about why the .vectors was removed in both the .ld files as well as bootdata.c

What I am curious about, is...

Well I had my code print out what it had for estack and ebss and it prints:
estack:0 ebss:2002c2c0

But that is also true for T4 now as well... So next up to see why?

Figured out the tool...

Side Note: I ran into issues yesterday or the day before where my builds were not working before this release, but that was because I had my Cores project directory linked into the Teensyduino...

Paul quick update,

Tried also on Ubuntu 20.04 64 bit,

Again tried T4.1 with blink (slightly edited 1000->250 as to see difference in blink. Again it programmed a T4.1 (dual PSRAM), After I...

Good Morning Paul,

I installed the beta Windows 10 64 bit on a clean install of Arduino 1.8.13 (renamed old, and unzipped the arduino zip file...) I installed the beta....

Then first attempt, I...