
Our Free plan gets you started. Our Pro plan takes you further. Free 7-day trial of the Pro plan included.

For decades, I've been relentlessly searching for a seamless, reliable solution for collaborative screenwriting, and everything has come up way short — until ArcStudio. Finally! An easy to use, rock-solid, one-stop-shop to structure, write, re-write, and note scripts with partners. The developers "get it" and are constantly evolving and improving in response to real users in the field. ArcStudio has saved me so much time and hassle, freeing me up to be creative!
Industry standard formatting meets thoughtful design
Even stable software has quirks. Here are fixes for the top 5 errors in v1.64:
| Error Message | Likely Cause | Solution | |---------------|---------------|----------| | “Wait for handshake timeout” | Driver conflict or wrong USB port | Uninstall other serial drivers (Broadcom, Nokia). Use USB 2.0 hub. | | “Checksum mismatch at block 0x…” | Bad PAC file or RAM corruption | Re-download the PAC firmware. Lower baud rate to 230400. | | “S_FT_ENABLE_DRAM_FAIL” | Bootloader incompatible with chip | Extract FDL files manually from a known working PAC and replace them. | | “Device not found in download mode” | Wrong key combo | Try Volume Up + Volume Down simultaneously, then insert USB. | | “NVRAM write error” | Partition locked | Use “Format whole flash” (risky) then reflash. | factory tool v1.64
Note: I assume you mean the command-line "factory" tool version 1.64 (commonly used for scaffolding/building projects). If you meant a different product, tell me which and I’ll adapt. Even stable software has quirks
If you lose baseband after a flash:
Why should you download v1.64 over other versions? Here are the standout features: Why should you download v1

The most efficient, elegant, intuitive, and all around user-friendly screenwriting software I've ever used — and I've used them all.
No! We release features often (often multiple per week!), and you're always on the latest and greatest version with the Pro plan (also on other plans, but some features might not be included).
Yes! Arc Studio has real-time collaboration built in, but continues to work seamlessly when offline.
Inviting collaborators requires a subscription, but collaborating itself can be done on the free plan (script editing and commenting are included in the free plan). If your collaborators want to use the advanced features in the Pro plan (outlining, custom formatting, etc.), they will also need to upgrade.
Not at this point, though we might have one in the future. You can use Arc Studio in Chrome on any Android device, though we don't offer long-term offline support.
No, your subscription is per person and includes unlimited devices: mac, Windows, iPadOS, iOS, and any browser.
Arc Studio is the new industry standard in screenwriting.
We go beyond formatting, with next-generation story-building
and real-time collaboration.