# Editor locks up on assigning byte 256 -Patch Parsing
**URL:** https://forum.electra.one/t/editor-locks-up-on-assigning-byte-256-patch-parsing/2874
**Category:** Bug reports
**Created:** [April 28, 2024, 12:11am UTC](https://forum.electra.one/t/editor-locks-up-on-assigning-byte-256-patch-parsing/2874 "2024-04-28T00:11:48Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@javelin276](https://forum.electra.one/u/javelin276)
#### Post date: [April 28, 2024, 12:11am UTC](https://forum.electra.one/t/editor-locks-up-on-assigning-byte-256-patch-parsing/2874/1 "2024-04-28T00:11:48Z")
I’m adding in parameters into the patch parsing one at a time, I’m up to byte 256 out of 603. When I send the code to the E1 the loading ellipsis rotates forever and never stops. Byte 255 works, byte 256 doesn’t. At 255 I can upload to the E1 just fine, then I can test the loading by loading the preset off the Yamaha FS1R to the E1, which works just fine. When I add one more parameter onto the loading JSON code for the next byte, it goes into the editor just fine, but it won’t upload to the Electra One. I noticed that the E1 doesn’t flash the USB device labels either when I try to upload to the E1 on byte 256.
Is there some kind of limit at 256 bytes? When I put the editor in Learn mode it loads 619 bytes down from the Yamaha FS1R. It can’t upload the code for more than 255?
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### Author:  [@javelin276](https://forum.electra.one/u/javelin276)
#### Post date: [April 28, 2024, 5:00pm UTC](https://forum.electra.one/t/editor-locks-up-on-assigning-byte-256-patch-parsing/2874/2 "2024-04-28T17:00:45Z")
OK, I tested a way around the problem, I saved the preset (with all 606 bytes read in) to my computer, then I renamed it p000.epr and copied it manually to the E1. It works, it now downloads all 603 parameters from the synth, I watched the highest byte’s value update the matching Control when I pressed the download-patch button.
The problem is in the up-loader routine, it limits the preset to only 255 bytes.
I restored the preset to only downloading 255 bytes again on the database so it’s functional online so you can debug the other problem, the pages.display() one.