How to Obtain Red Bolete Efficiently in Arknights: Endfield

• Author
• Recent Posts

Valencia

Guide Curator at GladiatorBoost

I’m the voice behind the blogs here at GladiatorBoost—diving deep into the gaming world to bring you guides, updates, and stories that actually help (and maybe even entertain a little). Whether it's breaking down the latest boosts or highlighting cool moments in your favorite games, I’m here to make the digital grind a little more fun.

Latest posts by Valencia (see all)

Arknights: Endfield uses a structured promotion system to control Operator growth and ensure steady progression. Much like ascension systems in other RPGs, promotion unlocks higher level caps and additional power spikes. One of the most important mid-game materials tied to this system is Red Bolete—a resource many players struggle to locate when they first need it.

This guide explains where to find Red Bolete, how to unlock its gathering location, how to farm it efficiently, and how it’s used for Operator promotion in Arknights: Endfield.

What Is Red Bolete Used For?

Red Bolete is a Promotion II material. It’s required when upgrading Operators from level 40 to level 60, making it a key progression item for mid-game and early late-game content.

Before Red Bolete:

• Pink Bolete is used to promote Operators from level 20 to 40

After Red Bolete:

• Operators gain access to higher stat scaling

• Skill level caps increase

• Gear restrictions are lifted

Without Red Bolete, Operator progression effectively stalls at level 40.

Authority Level Requirement

Before you can even attempt to obtain Red Bolete, you must meet a hard progression requirement:

• Authority Level 25

This is non-negotiable. Red Bolete only becomes accessible after reaching this level and advancing far enough in the main story.

Unlocking the Red Bolete Area

Complete the “Down the Hill” Main Quest

Once you reach Authority Level 25, continue progressing through the main storyline until you unlock the quest titled Down the Hill.

This mission transitions you:

• Out of Originium Science Park

• Into a new region called Origin Lodespring

Red Bolete only grows in Origin Lodespring, so completing this quest is mandatory.

How to Reach Origin Lodespring

After unlocking Down the Hill, follow these steps:

1. Start from Originium Science Park

2. Travel northeast

3. Pass through the Cliffside Trail

4. Enter Origin Lodespring

If the path is blocked, it means your main quest progression isn’t far enough yet—even if your Authority Level is high enough.

Finding Red Bolete in Origin Lodespring

Once inside Origin Lodespring, locating Red Bolete becomes straightforward.

Identifying the Gathering Spot

• Look for gathering icons shaped like domes with bunny-ear extensions

• One icon represents Red Bolete

• Another nearby icon represents Chrysodendra

These icons mark Rare Gathering Sites, which are fixed locations rather than random spawns.

Tracking Red Bolete Automatically

After collecting Red Bolete once, you can simplify future farming:

1. Open your inventory

2. Select Red Bolete

3. Choose Source: Rare Gathering Sites

This allows the game to track Red Bolete locations automatically, saving time and preventing unnecessary exploration.

Growing Red Bolete in Your Base

Farming in the wild isn’t the only way to obtain Red Bolete.

Extracting Seeds

Once you gather Red Bolete:

• You can extract Red Bolete Seeds

• These seeds can be planted for sustainable production

Unlocking the Growth Chamber

To grow Red Bolete in your base, you must unlock Dijiang Production: Growth Chamber.

This requires:

• Upgrading the Control Nexus

• Completing the quest Dijiang Upgrade and Maintenance I

Good news—this quest unlocks at Authority Level 24, meaning you can prepare the Growth Chamber before reaching Red Bolete’s natural location.

Why Growing Red Bolete Is Important

Wild Red Bolete nodes are limited and slow to refresh. Growing them provides:

• A renewable supply

• Reduced travel time

• Easier mass promotion planning

If you plan to promote multiple Operators, cultivating Red Bolete is highly recommended.

Red Bolete Promotion Costs

To promote an Operator to Promotion II, you’ll need:

• 5 Red Bolete

• 25 Protodisk

• 6,500 T-Creds

This upgrade unlocks:

• Level cap increase from 40 → 60

• Outfitting II, allowing purple-quality gear

• Skill upgrades up to level 6

Further skill upgrades beyond this point will require Chrysodendra, another material found in Origin Lodespring.

Farming Tips for Efficiency

• Unlock Growth Chamber early to avoid supply bottlenecks

• Track Red Bolete via Rare Gathering Sites after first pickup

• Gather Chrysodendra alongside Red Bolete to prepare for skill upgrades

• Avoid promoting too many Operators at once unless your supply is stable

Speeding Up Progress

Reaching Authority Level 25, unlocking Origin Lodespring, and setting up reliable Red Bolete farming can take time—especially if you’re progressing casually. Arknights Endfield Boosting at GladiatorBoost can help accelerate story progression, Authority Level gains, and material farming so you can promote Operators faster.

Many players use boosting services to bypass progression walls and focus on team optimization, gear upgrades, and higher-difficulty content without being gated by promotion materials.

Final Thoughts

Red Bolete marks a major progression milestone in Arknights: Endfield. By reaching Authority Level 25, completing the Down the Hill quest, and exploring Origin Lodespring, you’ll gain access to one of the game’s most important promotion resources.

For long-term efficiency, combining wild gathering with base cultivation ensures you’ll never be stuck at level 40 again—and your Operators will be ready for the challenges ahead.