Fix: v3 → v4 upgrade (clean method)¶

Support safety (read this first)

Admins/devs will not DM you first. Keep support conversations public (Telegram group / GitHub issues).
Never share your seed phrase, private keys, or wallet.dat with anyone.
Use only official download links (https://reddcoin.com / https://redd.love / https://download.reddcoin.com). Beware look‑alike sites.
If someone asks you to “verify” by sending coins, installing remote-control software, or sharing secrets (seed/private key), it’s a scam.
When sharing logs/screenshots publicly, redact personal info (paths, IPs, usernames). Do not redact block hashes needed for fork checks.
If you’re not sure what to back up (and where it lives), see Reference → Wallet files & locations in this knowledgebase.

Applies to: users moving from Core v3.x to Core v4.22.x

Why this matters¶

v3 and v4 blockchains are not compatible, and installing v4 over an old v3 data directory can cause peer-mixing and sync failures unless you reset the blockchain state. ¹ ²

Recommended (safe-default) method¶

Step 1 — backup funds¶

Backup v3 wallet.dat (File → Backup Wallet).
Keep a second copy offline.

Step 2 — install v4 (fresh)¶

Install the latest v4.22.x from official sources.

Step 3 — clean the data directory¶

Close v4, then in the data directory delete or move aside:

blocks/
chainstate/
indexes/ (if present)
peers.dat

This “clean update” is the approach admins recommend when moving between major lines. ¹

Step 4 — bring your funds into v4¶

You have two practical options:

Send from v3 to a new v4 address (preferred for HD seed phrase workflow).
Move/restore wallet files (see: Restore wallet files).

Footnotes¶

Telegram export (ReddCoinOfficial), obito, 16 Aug 2025 14:26 UTC-05, message2031121 (messages986.html). (v3/v4 not compatible; clean update preferred.) ↩↩
Telegram export (ReddCoinOfficial), obito, 18 Sep 2024 06:34 UTC-05, message2002895 (messages962.html). (v4 should connect only to v4 peers; peers.dat can carry old v3 peers.) ↩