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Ubisoft’s Title Update 1.0.4 for Assassin’s Creed Black Flag Resynced fixes the disappearing Jackdaw bug that left players stranded after upgrading their ship at the Harbourmaster. The issue where upgrading the Jackdaw while docked could cause it to disappear, leaving players without their ship, is now resolved. This guide covers every major bug fix in the patch, how to avoid similar issues, and what changed in the weather system, quest blockers, and performance.
TL;DR
- The disappearing Jackdaw bug after ship upgrades is fixed as of July 16, 2026
- Weather system rebalanced for more sun and less endless storms
- PC cutscenes unlocked from 30 FPS, multiple quest blockers resolved
- Download sizes: 2.44 GB (PS5), 2.7 GB (Steam), 3.71 GB (PC), 15.35 GB (Xbox)
What Is the Disappearing Ship Bug in AC Black Flag Resynced?
The disappearing ship bug occurred when upgrading the Jackdaw while docked could cause it to disappear, leaving players without their ship. This happened specifically when visiting a Harbourmaster in any port town, purchasing upgrades through the Upgrade Ship menu, and then returning to the dock to find the Jackdaw gone. The bug effectively stranded Edward Kenway on whatever island or city the player happened to be visiting, making naval travel impossible and blocking story progress. All upgrades are purchased through any Harbourmaster in the Upgrade Ship menu, so the issue affected a core progression mechanic. Without a ship, players could not complete naval missions, reach new locations, or engage in the piracy that defines most of Black Flag Resynced’s gameplay loop.
How to Fix the Disappearing Jackdaw Bug in AC Black Flag Resynced
Title Update 1.0.4 for Assassin’s Creed Black Flag Resynced released on July 16th, 2026 at 14:00 UTC / 10:00 AM EST / 7:00 AM PST. The patch is mandatory and applies automatically when you launch the game. If your Jackdaw disappeared before the patch, there is no official word on whether affected saves can be recovered, though some players reported the ship reappearing after fast-traveling or reloading an earlier save. The safest approach is to ensure your game is updated to version 1.0.4 or later before continuing any Harbourmaster shopping trips. Patch sizes are Xbox Series X|S: 15.35 GB, PlayStation 5: 2.44 GB, PC: 3.71 GB, Steam: 2.7 GB. Once installed, the bug is eliminated and upgrading the Jackdaw no longer triggers the disappearing ship issue.
Step-by-Step: Safely Upgrading Your Ship Post-Patch
Follow this sequence to get it done fast.
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1
Verify your game version
Check that Title Update 1.0.4 or later is installed by looking at the version number in the main menu settings or by confirming the patch downloaded on your platform.
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2
Visit any Harbourmaster
To upgrade the Jackdaw, visit a Harbourmaster in any town where they are available, marked on your map with a ship icon, in ports like Nassau, Salt Key, or Great Inagua.
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3
Select Upgrade Ship
Speak to them and select the Upgrade Ship option to access the full upgrade menu and spend Reales, Metal, Wood, and Cloth on the upgrades you can afford.
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4
Exit the menu and confirm the Jackdaw is still docked
After purchasing upgrades, leave the shop and walk back to the pier to verify the ship remains visible and accessible.
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5
Upgrade the Great Inagua Harbourmaster for higher tiers
Pay the man on the pier 500 Reales to build the Harbourmaster, then pay 2,500 Reales for Level II and 5,000 Reales for Level III; Level III unlocks access to every upgrade tier.
All Major Fixes in Title Update 1.0.4
| Bug Category | Example Fix | Impact |
|---|---|---|
| Gameplay | Players can get stuck harpooning if they start Boarding immediately after starting Harpooning; players are unable to dodge the fatal Humpback Whale's Tail slap during Harpooning | High — blocked whaling progression |
| Weather | Fixed the issue where the weather never becomes foggy and tweaked weather system balancing to increase the proportion of sun and clear skies | Medium — quality of life |
| Performance (PC) | Fixed an issue on PC where Cutscenes are locked at 30 FPS when graphics settings are set to 'Custom' | High — visual fidelity |
| Quest Blocker | Fixed an issue where players are unable to progress due to being stuck by the Animus wall in "A governor no longer" | Critical — story blocker |
| Audio | Fixed an issue where killing an enemy will cause a single body drop to sound like multiple bodies dropping | Low — immersion |
Common Misconceptions About the Ship Bug
The Bug Only Happened at Great Inagua
Not true. All upgrades are purchased through any Harbourmaster in the Upgrade Ship menu, meaning the bug could trigger at Nassau, Salt Key, or any port with a Harbourmaster vendor. Great Inagua is simply where most players first noticed it because that is where you unlock higher-tier upgrades by building the dedicated Harbourmaster stall. The disappearing Jackdaw was not location-specific; it was tied to the act of upgrading while the ship was docked nearby.
Fast Travel Could Always Fix It
Some players reported success with fast travel as a workaround, but this was inconsistent and depended on whether the game registered the Jackdaw as temporarily despawned or permanently deleted from the save file. Fixed various Fast Travel issues were part of the same patch, suggesting that fast travel itself had related problems. Relying on fast travel was a gamble, not a guaranteed solution.
The Weather Bug and Ship Bug Were Related
They were separate issues fixed in the same patch. Assassin’s Creed Black Flag Resynced made some notable changes to the original game’s weather system to make storms more dynamic and realistic, but they’ve also gotten annoyingly frequent; that’s one of the key changes in title update 1.0.4. The disappearing ship was a docking and spawn logic error, while the weather imbalance was an environmental tuning problem. Both needed independent fixes.
What Else Changed in Title Update 1.0.4
Beyond the ship bug, the patch fixed various localization issues for Simplified Chinese, Italian and Arabic, a dubbing issue that was affecting voiceover playback and cutscene visuals in localized versions, and improved performance and stability. Multiple lighting issues when players are indoors or in caverns were also corrected, making treasure hunts and cave exploration less visually broken. During the battle with El Tiburon, it might be unclear for some players on how to break his defense; we have added hints for players on how to break it, which helps one of the more notorious boss encounters. Several quest-specific blockers were removed, including an issue where “Imagine my surprise” and “The Commander’s Ruse” cannot be completed at the same time.
For players hunting Reales to fund ship upgrades, the patch eliminates the risk of losing your primary farming tool (the Jackdaw) mid-upgrade. If you are working through Animus Projects or collecting ship pets, the stability and quest fixes make progression smoother. The patch also addressed an issue where players can double jump when advanced parkour option is turned on, which was an unintended movement exploit.
Our Take: Is Title Update 1.0.4 Worth the Download Time?
Our Take
The patch is mandatory, not optional, but it fixes genuinely broken systems.
The disappearing Jackdaw was a showstopper bug that could brick a playthrough if you did not have a recent manual save. Ubisoft fixed it within a week of launch, which is solid support for a remaster. The weather rebalancing is equally important — endless storms interrupt sea shanties, ruin visibility during naval combat, and make sailing feel like a chore instead of the breezy escapism the game is designed around. The weather system is being changed so that rain and storms aren’t as frequent; instead, the game will increase the proportion of clear skies and sunny days. That change alone makes exploration less tedious.
The PC cutscene unlock is a big win for anyone running custom graphics. Being locked at 30 FPS during cinematics in a game that otherwise runs at 60+ was jarring. Quest blockers like the Animus wall in “A governor no longer” were progression-ending for some players, so those fixes are critical. The audio bug where one kill sounded like multiple bodies dropping was minor but distracting during stealth sequences. Overall, the patch addresses the most disruptive launch issues without introducing new problems, which is the baseline expectation but not always the reality with day-one fixes. If you avoided the game at launch due to bug reports, it is safer now. If you were already playing, the patch removes the need to hoard manual saves before every Harbourmaster visit.