it sometimes says different things like transfer unsuccessful a retry might work. But right now its more this device could not recognize that command
 

Have you done a full reset of memory like @lolpro11 suggested?

What is the error message? Pulling the battery will clear the ram, so that's expected.

For anybody who finds this thread, the OP found the solution:

After some hours trying to desperatly find the solution. I finally sent the Boot 2 successfully.

Here´s what you need to do.

First, try to see if you have slimmer cables if the ones you have are not so slim. That will be handy. To determine if they are slim enough, just see if it´s easy to stuck them correctly by just pushing it under the plastic cover in the connectors. The cables I was using weren´t exactly that slim, sometimes they would stick and when they did just a small movement would make them fall.

And once you go to the "Begin XMODEM file transfer" message, just carefully start to play around with the TXd cable (don´t let the other cables move) connected to your calculator. Start to push it or pulling it accordingly until those sybols in the screenshot stop multiplying. Once they do, send it normally.

I've split this into it's own topic.

Just tried out the latest demo, but on my 84+, I would recommend having a "are you sure?" dialog on quit, or moving the quit button to [mode]. Accidentally hitting clear when using the arrow keys can be a little bit annoying ;P

Sounds like you are dealing with the 83+/84+ family (minus the CE). In which case, you've listed all that I believe are available. ASM, C (badly optimized), Grammar, Axe, TI-Basic, and TI-Basic with libraries (Celtic III, etc).

Hello there.
Would that mean just an ownership change, or should we expect some significant changes regarding the actual omni site experience?

Likely we will be experiencing significant changes reminiscent of when TI purchased Omnimaga: https://www.omnimaga.org/news/ti-really-buys-omnimaga-more-details/

Uhm, very interesting indeed.
You are giving me some ideas about speeding up my net connection too. How expensive is that (~ 1GBit) for you?

$99CAD/mo for two years and then $160CAD/mo after that, at which time I'll try to grab another deal or just downgrade to the 300mbps up/down for $120/mo

I wonder, does the dog go online using the system76 laptop lying on the floor?
Thanks for having the trouble to put it together for us.

Haha, no I just was charging it before taking it to the basement.